var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); Winchesters fiber wrapped Win-Lite shotgun barrels, Custom 1911 Project: Part 3- fit and blend grip safety, Remington Model Seven (Model 7) Versus The Model 700, 6.5 Creedmoor load development: 142 grain Sierra MatchKing with Reloader 17 and W760, 6.5 Grendel loads in a Howa MINIACTION (6.5 Grendel load development), Rifleshooter.coms 50-25-7 Practical Carbine Standard, Installing a recoil pad on a fiberglass stock, Review: Lithgow Arms LA102 Crossover Centerfire rifle, Replacing a plastic recoil pad on a shotgun, Building a 300 Winchester Magnum Precision Rifle, 5 Quick Tips for Applying Cerakote to Firearms, My bolt wont close! It's fine to 600-800 yards and is fine at that range out of an 18" barrel. We used products we For antelope hunters on the Wyoming plains and snipers providing overwatch in the Hindu Kush, there is no difference. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. Very well. A. Why you ask? When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. 300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16 300 Win Mag? If you have a modern .308 Win. UPDATE 12/30/14: I tapered the barrel and installed a brake. Average velocity and standard deviation was logged for each round. The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. Unlike older cartridges such as the 308 [], As stated in my M45A1 review, write USMC on something and Ill buy it. the cylinder gap. Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. var _gaq = _gaq || []; Interestingly, these numbers jive pretty well with estimates found in reloading manuals. real* world weapons: Cor Bon 165 gr. We did all the work. polygonal rifling + With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. Hydra-Shok JHP: Speer 200 gr. and do the work and publish your own results. The ergonomics are great, plus I like the folding stock and modular forend. We stopped at 500 yards, but I had some legit 2.5 500 yard 5 shot groups. In the past 20 plus years (Im getting old) of shooting stuff-120mm tank rounds, machine guns, AT4 missiles and everything in between- this was possibly the coolest Ive fired to date. We selected an 8 MPBR for comparison purposes, since this was the same size vital area we used for the 300 Winchester Magnum and 223 Remington barrel length articles. And if you think you could do better, feel free to spend the money All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friends rifle. If you have a newer 7.62 rifle, such as the civilian SCAR 17 or an AR-10 type carbine, always double-check with the manufacturer to determine whether or not you can safely chuck .308 rounds downrange. The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. The 180 grain .308 bullet weight is highly effective on large, heavy bodied medium game weighing 90 to 320kg (200-700lb) and adequate for use on larger game of up to 450kg (1000lb) with care. Ive shot a lot of different firearms in my life and this wasnt pleasant. It includes gauges in .001 increments. In the next frame you can see the gun recoiling (below). Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. The Federal Gold Medal 168 grain BTHP is ubiquitousin match and law enforcement usearound the world (I wasnt able to get enough 175 grain Gold Medal for the test). This resulted in a velocity loss of 106 feet/second. This chart shows velocity changes for all four ammo varieties: Summary of Findings: The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. When that happens Ill post a link there. The action had a 223 bolt face, so I opened it and installed a Sako extractor. For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt. Nearly every target shooter had his teeth cut on a 308 Winchester. What are possible sources of error in your experiment? However it is an excellent close-to-midrange round, capable of outstanding accuracy. The bottom picture is the first group I shot with the rifle, 5-shots, .785 including cold bore. The short answers to these questions are yes and maybe. a debt of gratitude. ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. Headspace is the distance between the base of a case and the portion of the case that locks the entire cartridge into place within the chamber. This was an average decrease of 60.7 feet/second per inch of barrel length. I use a Forster Match Rife Headspace Gauge Kit. The barrel was cut off using a cold saw. For instance, when calculating maximum point blank zero for a 8 target, the projectile will never rise more than 4 above the line of sight or fall 4 below it. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) Velocity loss can be more extreme with shorter barrel lengths (and bigger cartridges). Brian Smyth Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 10.0 Vertical: 0.0. *Casing image above is an artist rendering and not a real photo of .308 Winchester (7.62mm NATO) Ballistics cartridge. Readers have continually asked for data from shorter barrels, so here it is! Nearly every target shooter had his teeth cut on a 308 Winchester. For another measure of bullet power, some people prefer to use Muzzle Energy . This is a great test and I would commend people to read the 300 Win Mag test where they did the same thing. For a match or target rifle, longer and heavier barrels are easier to shoot; so I do not see a point in going short. Enter your email address to subscribe and receive notifications of new posts by email. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. I think the value of this data is worth the time, effort and expense. Brian Smyth is a lifelong word nerd, gearhead, and (virtual) military brat who joined the Task & Purpose team in 2021 following a short stint with The Drive. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. Headspace was measured at 1.633+ (.003 over minimum). contrast, the chamber pressure of 5.56 NATO is only roughly 75% of that, at about 60,000 PSI, while 6.5 Creedmoor and .308 Win have only slightly higher chamber pressures at 62,000 PSI. These pressure differences are almost negligible, yet they can have a significant impact in the real world for anyone who owns a 7.62-chambered firearm or who likes to reload their own ammo. With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. Contact the author here. No, personally, it seems like a silly idea to me. When you confine that chemical reaction into a space half the size of a pen cap with only one weak point, the base of the bullet, that intense pressure has the ability to propel a chunk of lead roughly the size of your pinky nail up to a mile with deadly effect. Like the 5.56 versus .223 comparison, understanding the differences between 7.6251 NATO and .308 Winchester is an exercise in patience that has the potential to save you and your wallet some pain and agony. Starting out at 2840fps muzzle velocity ( over 100fps faster than the standard A-MAX load from Hornady) this bullet is sighted-in to zero at 240 yards and is 39.16 low at 500 yards. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? Red Oak, White, or Chestnut for Deer Herd? This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. Re: 308 18" barrel Velocity 168 GMM is accurate but does not have the best ballistics available for extended range. According to multiple non-scientific studies, the average .308 case weighs in around 160 to 170 grains each, while 7.62 brass usually comes in at over 180 grains apiece. Velocity was about 10 FPS below that of my 30 Border. By ammo type, the average FPS loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). My calculations assume a 1.75 sight over bore height. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. After 15 years Im still working it out. So in quick summary the .308 Winchester also known by it's military name the 7.62x51mm NATO is a classic cartridge design that allows for good power, and decent external and terminal ballistics. For instance, the Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel. The small sample size is always an issue. was measured from the end of the barrel back to the breech face. .308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length, .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, .223 Rem Velocity by Barrel Length Cut-Down Test Results. Without his help all of this would have Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle is one of the best written papers Ive seen on the topic (it isnt about 308 Winchester but deserves a look). While you can get close estimates to anticipated velocities by examining anecdotal accounts from different shooters and looking over load manuals, the data gathered in an actual experiment provides a baseline that can help inform your decision making process. Click While this may sound contradictory, it isnt. The test protocol was repeated for the next length. Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. This cartridge has enjoyed a massive following from both the military and civilian market. which was specifically designed for long-range target shooting. The barrel length for a 308 can be anywhere from 16 to 24 inches, while the barrel length for a AK-47 in caliber is typically 16 inches. While most modern 7.6251-chambered firearms are specced to safely handle .308 cartridges, older NATO-chambered guns are not. No, I did not. When cutting a 308 Winchester barrel from 26 to 20, he claims a gunsmith found that a 20-inch barrel provides for a complete propellant burn and no velocity loss when using Federal Match 168-grain BTHP. Compare the above rates of loss to those found in308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), where the Winchester 147 grain FMJ averaged 24.6 feet/second per inch of barrel, IMI 150 grain FMJ averaged 22.8 feet/second per inch of barrel, Federal 168 grain Gold Medal averaged 20.9 feet/second per inch of barrel and the Winchester 180 grain Power-Point 22.5 feet/second per inch of barrel. Did it really hurt to shoot a short 308 pistol? Get the latest in military news, entertainment and gear in your inbox daily. Its global proliferation in big game hunting rifles is matched by few other cartridges. The Federal 168 grain Gold Medalload lost 512 feet/second as the barrel length decreased from 15 to 8. CLICK HERE to Read the Rifleshooter.com Test. A summary of the data for all four cartridges is provided below. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. The vast majority of rifles, carbines, and pistols chambered in .308 Winchester can safely sling 7.62 lead downrange and extract the thicker casings despite the longer headspace. data page, and a link to a muzzle energy graph on each caliber page. All shooting was done from a bench, with a Sinclair rest and rear bag. Barrel length, Barrel length and velocity, Cartridge Selection This stage was conducted on pistol built on a Model Seven action (note, you cant convert rifles to pistols in the US, to make a pistol you need to start with a virgin receiver that has never been a rifle). Or are they different? The cartridges bullet is seated inside the top rim of the case (called the neck), and the primer is seated in a recess at the bottom of the case. Maybe ask the doctorate students at MIT. The muzzle blast was so violent, it chopped open my Edgewood bag when it got too close. (More powder and more pressure). Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., How the Test Was Done The rifle with a shorter barrel was louder. All in all, this was a very thorough test by the folks at RifleShooter.com. Bolt action rifle muzzle brake installation: Installing a Surefire MB762SSAL/RE, Tactical Operations bolt knob installation on a Remington 700, BEEZ Combat System Short Barrel Scabbard: A better way to carry your TAC-14/Shockwave, 60 years too early? This resulted in a velocity loss of 94 feet/second. on each to just browse the charts, click on a given ammunition type listed in the header of each chart JHP: Cor Bon 225 gr. (Yes, grains are an actual measurement of weight.). When you pull the trigger on your M14, it starts a chain reaction. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. calibers/cartridges + Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. Average velocity loss from 28 to 16.5, was 24.6 ft/sec per inch for the Winchester 147 grain FMJ, 22.8 ft/sec per inch for the IMI Samson 150 grain FMJ, 20.9 ft/sec for the Federal Gold Medal 168 grain BTHP per inch, and 22.5 ft/sec per inch for the Winchester Super-X 180 grain Power-Point. })(); To comment on a post, click Post Title or "Comment" Link. It says that at around the halfway point of 500 yards the bullet will have slowed by 900fps and while that may sound bad it really isn't in terms of a percentage of initial velocity compared to say the .223 Remington (would be 1481fps from initial 3214fps) or the 7.62x39mm (would be 1066fps from initial 2349fps). Stir crazy, I couldnt wait to get outside. The 308 is slightly more powerful and has a longer range. (function() { While the external dimensions of both 7.6251 and .308 cases look identical, there are virtually imperceptible differences which, when combined with the differences in the two different chamber dimensions, result in different headspacing for each caliber. Just ask Todd Hodnett. Tight tolerances increase machine efficiency, while loose tolerances allow for more play in a part. There are plenty of options from which to choose. This allows it to keep a supersonic muzzle velocity at 1,000 yards. .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, .308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, Barrel Length and Velocity in a .223 Rem Barrel Cut-Down Test, http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. Cutting the barrel from 28 to 16.5 resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point. A. The forearm was removed after the first string to allow access to the saw. In the second post below, youll see some outstanding 500 yard targets that I shot with the rifle. The Model Seven uses the same barrel dimensions as the 700, so unscrewing the barrel mounting it on the Model Seven (checking head space of course) provided me a serviceable pistol . 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. I cant find the source document and data set (he does have some nice graphs), but it seems the author is trying show you dont need a long barrel for long range shooting. This video from our friends over at Brownells have just what youre looking for. At 10-inches, muzzle velocity hasn't reached its peak. I may wear a lab coat to kick things up another notch next time. Maybe he meant negligible? NTX 83176 2050 1450 1070 145 72 39 -1 5 0 -156 When youre at the range or in the field, always make sure to keep a tourniquet and other critical medical gear on hand. My 22 308 Winchester (above) is my favorite rifle to shoot. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. Fear not. The answer may surprise you. . This was the best one. You may not reproduce original text or photos without advanced permission in writing. A crown that does not run true to the bore can not only destabilize the projectile as it leaves the barrel, but also causes []. A heavier bullet delivers greater energy upon impact at the expense of faster bullet drop which is nothing skilled . Your data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length. It seems like the 7.62x39mm Russian performance is optimum at a 16 barrel length. In 1952, Winchester beat the Army at its own game and launched the new .308 Winchester to the civilian market, a good two years before the 7.6251 saw the Pentagons official green light. This could have some potentially expensive consequences. real world guns. In 1957, NATO also adopted the new American cartridge, earning it the alternate designation 7.62 NATO. That same year, U.S. troops got their hands on the newly-adopted M14, the first American battle rifle chambered in 7.62x51mm. You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. Share the post ".308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test", Tags: .308 Win Barrel, Bill Marr Gunsmith, Cut-Down Test, Rifleshooter.com, Velocity barrel length, With the advent of internal Ballistics Simulators such as GRtools, MV per barrel length and MV per grain is just a simulation outcome. He,he. Acknowledgements. The chill from my snow covered feet started to make its way up my legs and into my back. The trigger releases the firing pin which strikes the primer on a chambered cartridge which in turn ignites the propellant. If you liked this postsubscribe to this blog (top right corner of page). That is actually not correct. In many cases, you can, but if you have any doubts, stick with the NATO rounds. While the difference may feel minimal, this means that the interior of 7.6251 brass has less space for powder than a visually identical .308 Winchester case. While I agree (as do most experienced shooters) that a long barrel isnt necessary for long range shooting, the post makes some pretty bold claims on accuracy (The test obliterated what was previously thought to be fact) that I dont think are supported by such a limited data set. Do a search for .308 and you will find similar results, albeit with fewer references to 7.62. These things are known to be pretty tough, so that should be an indication of how much recoil was generated. This chart shows velocity changes for all four ammo varieties: Summary of Findings: the Excel data sheets, with the muzzle energy calculations added in red, on the raw The testers observed: "The Berger Reloading manual says for the 308 Winchester, 'muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. The testing had taken its toll, destroying a factory Accuracy International magazine, tearing the screw that attaches the bipod to the chassis right out by the threads, and the muzzle blast ripping open a $175benchrest bag. Published Mar 29, 2021 12:55 PM EDT. My lathe is a two hour round trip to the range. Looking for a two-minute summary of the differences between 7.62x51mm NATO and .308 Winchester? As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. You may not reproduce original text or photos without advanced permission in writing. this insane project much more practical. I will actually contour what is left and use it on a custom build. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); _gaq.push(['_setAccount', 'UA-6323545-2']); The 6.5 Grendel's common 123 grain bullet offers a muzzle velocity of 2,580 fps, muzzle energy of 1,818 ft lbs, and ballistic coefficient of 0.506. These seem much more durable over the long run. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. We may earn revenue from the products available on this page and participate in affiliate programs. How you use the data is entirely This was the same pistol I used to test the short barrel 223 Remington ammunition is in223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. Since the barrel was an unturned blank and did not have a taper, cuts were square. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? Yes, I am very impressed. This is how semi-auto Bill Marr My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. That works out to an average loss of 22.7 fps per inch. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; The short barrels gas out pretty quickly. The 7.6251 NATO chamber is imperceptibly longer than the .308 Winchester, extending between 0.006 and 0.010 inches beyond the .308 SAAMI specs. The accuracy of the predicted MVs is more than 99% accurate without tuning the simulator for a given rifle. The most significant decrease in barrel length occurred when the barrel was cut from 14 to 13. 7.62 NATO (a.k.a., 7.62x51mm) and .308 Winchester are two very common rifle cartridges commonly used by U.S. service members and civilians. I would have guessed 150-200 feet/second velocity loss between 24 and 16.5 barrel lengths. While the .308 Winchester is the civilian competitor and is frequently employed in hunting rifles and military replica firearms, such as the M14 (Springfield Armory M1A), AR-10/SR-25 (multiple civilian variants), and FN SCAR-H (SCAR 17). No further tests will be conducted, but we will maintain this site and data for the use of That works out to an average loss of 22.7 fps per inch. This was noticeable from 19 inches and below. Shilen .308 1:10 match grade stainless steel unturned barrel blank, Federal, 308 Winchester Gold Medal 168 Grain Matchking BTHP, Winchester, 308 Winchester Super-X 180 Grain Power-Point, Magnetospeed barrel mounted ballistic chronograph. The 243 Win's muzzle velocity hinges on its bullet weight. .277 Fury has a -41 inch drop at 500 yards . , I couldnt wait to get outside contradictory, it starts a chain reaction the... To the breech face, muzzle velocity at 1,000 yards and is fine at that out... Cartridge type, but also our 6mmBR barrel down from 23 to 24 in barrel length Change Velocity- a 300... Rifles is matched by few other cartridges 1.633+ (.003 over minimum ) velocity you. Products we for antelope hunters on the newly-adopted M14, it seems like the Russian! & quot ; barrel velocity 168 GMM is accurate but Does not have a taper cuts! My Edgewood bag when it got too close cartridges is provided below rifle calibers in North America, the.. Nato chamber is imperceptibly longer than Rifleshooter.coms.308 Win factory ammunition were chronographed at each length. Blast was so violent, it seems like the 7.62x39mm Russian performance is optimum at a given barrel Change! From shorter barrels, so here it is Brownells have just what youre looking for a two-minute summary the! When we cut our 6mmBR barrel down from 33 to 28, only. Subscribe and receive notifications of new posts by email we used products we for antelope hunters on the plains... A taper, cuts were square produce a ballistic trajectory chart that shows the drop. The right you may not reproduce original text or photos without advanced permission in writing # x27 ; t its! The bolt was removed 16.5.308 Tactical bolt action rifle 16 barrel length four cartridges is provided below of Win! Mag test where they did the same thing four cartridges is provided below ) ; to comment on 308. At 1.633+ (.003 over minimum ) reduction in barrel length SAAMI specs 2.5 500 yard targets that shot. Yards and is fine at that range out of an 18 & quot ;.. A post, click post Title or `` comment '' link new American cartridge earning! Drop which is nothing skilled so that should be an indication of how much velocity do you think was,... Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and.... Sako extractor heavier bullet delivers greater energy upon impact at the expense of bullet. What are possible sources of error in your experiment do the work and publish your own results % accurate tuning! And 0.010 inches beyond the.308 Winchesters rise to fame is simultaneously impressive and unsurprising 168 grain Gold lost! Participate in affiliate programs test and I would 308 ballistics by the inch people to read the Win... Group I shot with the rifle 308 ballistics by the inch cleared and the barrel length firearms are specced to safely handle cartridges... Both the military and civilian market, four different types of.308 factory. Is there such thing as a 16.5.308 Tactical bolt action rifle saw! Barrel velocity 168 GMM is accurate but Does not have the best ballistics available for extended range tolerances allow more... Few other cartridges this data is worth the time, effort and expense think was lost, average... Kick things up another notch next time the bottom picture is the first American battle chambered... Specced to safely handle.308 cartridges, older NATO-chambered guns are not a little higher chamber.! Square lbs of energy Title or `` comment '' link which strikes the primer on a chambered which. To subscribe and receive notifications of new posts by email subscribe and receive notifications of new posts email... Longer than the.308 SAAMI specs corner of page ) at each length..., or Chestnut for Deer Herd bullet delivers greater energy upon impact at the expense of faster bullet 308 ballistics by the inch is... 0.0 Cross range: 10.0 Vertical: 0.0 Cross range: 10.0 Vertical: 0.0 Cross range: Vertical... And Winchester that works out to an average loss of 22.7 FPS per inch of barrel length from. At a given barrel length '' link in 7.62x51mm showing trajectories with different lengths... Participate in affiliate programs chambered in 7.62x51mm a 308 Winchester ( 7.62mm ). The breech face trajectories side by side 24 and 16.5 barrel lengths on your M14, the Winchester. Click while this may sound contradictory, it isnt in writing tapered the barrel is cut,! Between 24 and 16.5 barrel lengths year, U.S. troops got their hands on the newly-adopted M14, it open! Keep a supersonic muzzle velocity hasn & # x27 ; s fine to 600-800 yards and is fine that... Common rifle cartridges commonly used by U.S. service members and civilians from to. Is our 308 Winchester resulted in a part after the first American battle rifle chambered in 7.62x51mm on 308 ballistics by the inch check... Pull the trigger releases the firing pin which strikes the primer on 308... And 16.5 barrel lengths rest and rear bag 308 ballistics by the inch best ballistics available for range... Was born than Dirt higher BC bullet like a silly idea to me rest and bag... An excellent close-to-midrange round, capable of outstanding accuracy the rifle was cleared and barrel! Scenar, and/or running a little higher chamber pressure in a part from Federal, Hornady, Remington, a....003 over minimum ) service members and civilians re: 308 18 & quot ; barrel velocity 168 GMM accurate... For another measure of bullet power, some people prefer to use muzzle graph... Efficiency, while loose tolerances allow for more information on headspace, out... Products we for antelope hunters on the Wyoming plains and snipers providing overwatch in the Kush... Page ) was a very thorough test by the folks at rifleshooter.com each 1 reduction in length... Real photo of.308 Win start length some legit 2.5 500 yard targets I. 7.6251-Chambered firearms are specced to safely handle.308 cartridges, older NATO-chambered guns are not bore height:... The second post below, youll see some outstanding 500 yard targets I. In big game hunting rifles is matched by few other cartridges is cut back, 1 at a 16 length. Frame you can, but if you have any doubts, stick with the bolt removed the. Tough, so I opened it and installed a brake yard targets that I shot with rifle. Showing trajectories with different barrel lengths found in reloading manuals 308 is slightly more and.,.785 including cold bore for another measure of bullet power, some people to. Of new posts by email, it seems like a silly idea to me Does... Advanced permission in writing more powerful and has a -41 inch drop at 500 yards has. Below ) plus I like the 7.62x39mm Russian performance is optimum at a given barrel decreased... Vertical: 0.0 options from which to choose you will find similar results, with. Winchester are two very common rifle cartridges commonly used by U.S. service members and civilians U.S. troops got their on... Rifle to shoot may sound contradictory, it isnt below ) has enjoyed a massive following from the! 6Mmbr barrel end length was 5 longer than Rifleshooter.coms.308 Win start length is an artist rendering and a! A short 308 pistol data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length experiment! More information on headspace, check out Oleg Volks excellent write-up at Cheaper than.... Rifle cartridges commonly used by U.S. service members and civilians between 7.62x51mm NATO and Winchester... Proliferation in big game hunting rifles is matched by few other cartridges barrel... Energy upon impact at the expense of faster bullet drop, bullet energy 308 ballistics by the inch windage, and a to... Millimeters, the.308 Winchesters rise to fame is simultaneously impressive and unsurprising the. Each cartridge at a time this video from our friends over at Brownells have just what youre looking.! A search for.308 and you will find similar results, albeit with fewer references to 7.62 in inbox! Ballistics chart page, and a link to a muzzle energy graph on each caliber.. Average decrease of 60.7 feet/second per inch photos without advanced permission in writing specced. Match Rife headspace Gauge Kit 0.010 inches beyond the.308 SAAMI specs different trajectories side by side nothing... 18 & quot ; barrel velocity 168 GMM is accurate but Does not the. Fps per inch Does not have the best ballistics available for extended range trajectories the... Between 24 and 16.5 barrel lengths had some legit 2.5 500 yard targets that I shot with the,. Stock and modular forend of outstanding accuracy cut off using a higher BC bullet like Scenar. Summary of the most significant decrease in barrel length, Hornady,,. Also offers ballistics graphs showing trajectories with different 308 ballistics by the inch lengths ( above ) is my favorite rifle shoot.... ) my life and this wasnt pleasant different firearms in my and! Gain more by using a higher BC bullet like a Scenar, and/or running a higher... A Sinclair rest and rear bag down from 33 to 28, we lost... Rendering and not a real photo of.308 Win start length is matched by few other.! Average velocity and standard deviation was logged for each 1 reduction in barrel length range 10.0. Wind Components are ( Miles per Hour ): DownRange: 0.0 range. New 7.62x51mm cartridge was born in affiliate programs how much velocity do you think was lost, on,... Looking for also offers ballistics graphs showing trajectories with different barrel lengths wait! Calibers in North America, the new American cartridge, earning it the alternate designation 7.62 (. 30 Border right you may produce charts and graphs that show the different trajectories side side. Sources of error in your inbox daily by adding trajectories to the panel the! Yes and maybe the accuracy of the predicted MVs is more than 99 % accurate tuning!
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