Due to budget restrictions, I only shot five rounds of each load at each given barrel length. 7.5 tw will stabilize all heavy 6mm bullets fine. Any of these will dramatically shorten barrel life. Getting new life from a used barrel. Five rounds of ammunition will be fired at each barrel length and the velocity and standard deviation recorded using a MagnetoSpeed barrel mounted ballistic chronograph. Average velocity reduction was 39.6 feet/second per inch of barrel length. Charles Rains. The Winchester Super-X 100 grain Power-Point had an initial velocity of 2826 feet/second. As mentioned above, I agree with sample size. Regardless, the .308 is a very gentle round when it comes to barrel life and with proper care it will last a long … I selected two different factory ammunition offerings for this experiment, Remington 80 grain Core-Lokt PSP and Winchester 100 grain Power-Point. Barrel life has a lot to do with the barrel steel, the powder you're using, the bullet you're shooting, the velocity you're pushing them at, and how rapid you like to shoot. over the 243AI and most say you get longer barrel life due to the case being a little longer. Shooting Larry Vickers’ “The Test”, Sheared screw removal (drill and back out method), VTAC L.U.S.A. Well, like everything in shooting, it comes back to physics. I have a 243 that I shot in F Class that was a sub .5 MOA gun. January 30th, 2020 Can You Predict Useful Barrel Life? Insights from Dan Lilja. Often high-volume shooters will re-chamber or set back a used barrel. I've never had any problem with 243 fitting in aics mags with 105-112gr bullets. Mag. Savage Rifle Build, .243 Ackley Improved with a Match Shilen Barrel. Re-chambering a barrel: 243 Winchester to 6×47 Lapua. The .308—a fine design in and of itself—has been responsible for a number of successful cartridges, but the .243 has to be the most successful. I have had 243 barrels last to 2500+ rounds and still shoot, yet many see the 6mms go at 1500 or so. I did not control for barrel temperature. Building a custom 300 Blackout (BLK) Precision Rifle, Budget precision rifle: Customizing the Savage Axis, In 223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friend’s rifle, we cut the barrel of a factory Remington 700 chambered in 223 Remington back one inch at a time […], Game changer? As I've been getting all kinds of mixed answers elsewhere. These chamberings pump a lot of powder through a small bore. It works great with the 243 Winchester. Barrel life is the downside of both the .243 AI and standard .243. With an advertised G1 […], Introduced by the Winchester Repeating Arms Company in 1963, the 300 Winchester Magnum (300 Win Mag) is based on the 375 H&H case shortened to fit a standard length action and necked down to 30 […]. It held out for about 1000 rounds before the accuracy started falling off. Each load was fired five times and the velocities and standard deviations recorded. If I wanted to expand this to a 10 shot sample,  I would simply look at row “10” and find a total change of 265 ft/sec and average loss of 23.0 ft/sec per inch of barrel. Erosion from bullet friction alone is minimal as suggested by the longer barrel life of “mild” cartridges like 30-30 Winchester, 22 Hornet, and especially 22 rimfire. Founded by Frank Galli in 2014, Sniper’s Hide has been offering informational videos, podcasts, and other support to it’s users in one location. Hi guys, So I'm just getting into some longer range shooting and was told this would be the place to get a good answer for this question. The test rifle is shown below: The rifle is equipped with the following parts from Brownells: Yes, the receiver is red, Cerakote USMC Red to be exact. If you searching to evaluate 243 Rifle Barrel Life And 17 Remington Rifle Barrel price. Rifleshooter.com and its authors, do not assume any responsibility, directly or indirectly for the safety of the readers attempting to follow any instructions or perform any of the tasks shown, or the use or misuse of any information contained herein, on this website. Let it cool between shots. I had a 243 AI and its a great round. Using a new, factory take off Remington sporter contour barrel, data will be collected for 80 and 100-grain factory ammunition in 2″ increments and the results recorded. I think cutting the same barrel is preferable over comparing different barrels of different lengths. (Read how heat eats barrels here.) The 6XC has roughly 25% more barrel life than a 243 … will we be able to improve that another 25% or even more in the future? The .243 Winchester is simply the .308 Winchester necked down to hold .243″ diameter bullets. I haven’t encountered any magazine related problems with it in various different firearms. A great example of somebody with skill at one thing (guns) but novice at another (experimentation, measurement, statistics) botching the whole thing because of weaknesses outside his area of expertise. It was the wildcatters who brought it back to life by fiddling with a couple of popular designs. April 18, 2015 at 12:43 am. For example, Dan’s FAQ addresses the question of barrel life. 300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16″ 300 Win Mag? The experiment was repeated until the barrel was 16″ long. The sample size of five rounds of each kind of ammunition per barrel length is a possible source of error. vs. .30-06 vs. .416 Rem. However, take a look at this from my 308 Winchester post, and how the results change with sample size: Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. 243 Winchester Verse 22-250 Remington barrel life expectancy? I've had my .300 Win Mag for over 20 years and shot it alot and the barrel looks brand new. The barrel did heat up during firing. The 243 Winchester’s 6mm (.243″) bullet offers reduced recoil and the ability to use lighter, faster bullets for varmints and small game, while heavier, 100 grain loads can be used to harvest deer. The core rule to extend barrel life is to not shoot it fast and hot. We chose to go with Ratchet Rifling and a barrel length of 26". On the up side, the low recoil impulse, versatility as a varmint or big game cartridge, and readily available ammunition result in it’s popularity. .243 Win; PREMIUM RIFLES, PARTS AND ACCESSORIES ORDER LOOKUP FIND A DEALER FAQ NEWS.243 Win. All barrels were Harts. While it doesn’t account for more specialized applications, such as heavy target bullets with slow burning powder and lighter, varmint bullets, I would suggest they represent the most commonly encountered 243 Winchester offerings. I shot the barrel out and had it rebarreled in a 6mmAI and that is awsome!!! A few folks have been experimenting with the use of very slow, cooler-burning powders. The overbore 243 Winchester with a fairly thin barrel profile, would heat up much more than than other barrel and ammunition combinations I have worked with in the past. For example, I have read that, according to Hornady technicians, the accurate barrel life of a 6.5mm PRC rifle (143 grain bullet at 2960 fps; MAP 65,000 psi) is about half that of a 6.5mm Creedmoor rifle (143 grain bullet at 2700 fps; MAP 62,000 psi)--about 1500 rounds versus 3000 rounds! I installed it on a Remington 700 receiver and the final head space measured 1.633″, which is .003″ above SAAMI minimum head space specification. The test process is fairly straight forward. Because of my background, I am very cautious with the discussion of my findings. Additional features include a rifle-length gas port, M4 Feed Ramps and 5/8"-24 threaded muzzle. Average velocity reduction was 42.3 feet/second per inch of barrel length. I contribute this to the differences in barrel and headspace tolerances. Of course, if you are shooting a “long-lived” .308 Win that goes 5000 rounds before losing accuracy, then you get a whopping TEN seconds of barrel life. The .243 Winchester is simply the .308 Winchester necked down to hold .243″ diameter bullets. Moose Gun Face-Off: .243 Win. Accuracy at 100 yards degraded at around 300 rounds but still shot great at distance until about 850 rounds at which point it completely gave up. My understanding is that barrel life is very low, from what I've read around 1500 rounds. I found this on Facebook, in regards to the 6.5 Creedmoor barrel length experiment, I too love the 142 SMK. Too small? You get a little more case cap. 1 Item . Barrel Life on the .243 can range anywhere from 1,500 rounds to 3,000. Modifications to a firearm may result in personal injury or death, cause the firearm to not function properly, or malfunction, and cause the firearm to become unsafe. Overbore cartridges tend to be characterized by high muzzle velocities, use of slower burning powders, longer barrels and relatively short barrel life due to throat erosion. It still shot one ragged hole if I did my part. copyright: MikeC-AccurateShooter Just right? Erosion from bullet friction alone is minimal as suggested by the longer barrel life of “mild” cartridges like 30-30 Winchester, 22 Hornet, and especially 22 rimfire. “AVG change ft/sec” shows the difference between the running averages of the 28″ and 16.5″ barrels. Before we get to the good stuff, please take the time to review the disclaimer below: The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. He should have consulted somebody. It was the wildcatters who brought it back to life by fiddling with a couple of popular designs. I hear you can get 3,000 to 4,000 rounds out of a 22-250 Remington. From a statistical standpoint, the article is bunk. “AVG 28″ ft/sec” and “AVG 16.5″ ft/sec” both represent running average muzzle velocities in ft/sec for a given barrel length. A friend that shoots a .243 has done tests with moly coating and barrel life. Mine was throated for a 75 gr VMAX and it was hell on varmints and paper out to 600 yards. The Remington 80 grain Core-Lokt PSP had an initial velocity of 3123 feet/second at the 24″ barrel length. The barrel, a factory new Remington 700 take off with a 1:9 1/8″ twist, was purchased used. Velocity loss per inch of barrel was .6 ft/sec away (22.8 ft/sec) from the value calculated with 5 shot strings. Is there a more reliable way to predict barrel life — one that will work for a broad range of calibers? Set Ascending Direction. He should have consulted somebody. April 19, 2016 Savage B22 Precision Rimfire Rifle Review, Beretta M1951 mystery- cutting our way to the truth, Gunsmithing: replacing a curved steel butt plate with a rubber recoil pad. This provides data for barrels 24, 22, 20, 18, and 16″ long. Sniper’s Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. If your barrel loses accuracy at the 1500-round mark, then it only worked for three seconds! Some precision shooters make claims to barrel life can be a difference. I’ve run 6.5 Creedmoor, 243 Winchester, 7.62x39mm Russian and 308 Winchester in it and have had great results. I've had 243 barrels that were completely gone at 800 rds, and I've had others (hunting/varminting rifles) that went a few thousand. Just enough faster than a 6x45 to make it seem like it's on a different level. “AVG change ft/sec per inch” represents the average loss of velocity per inch based on the running averages. The 6.5 will have better barrel life in the 2500-3000fps range and the .243 is usually under 2000 but even there it's not a huge difference. On the Lilja FAQ Page as you’ll find informed answers to many commonly-asked questions. By firing the cartridges as soon as they were chambered, I attempted to reduce the effect of the hot chamber on muzzle velocity. The rifle was then cleared, and 2″ was cut off the barrel using a cold saw. As sample size increases, so does the validity of the results. Any modifications made to a firearm should be made by a licensed gunsmith. Beyond hunting use, the 243 Winchester has adopted a following in competitive rifle circuits, where the fast, 6mm bullet offers low recoil, flat trajectory and match winning performance. View as Grid List. So while more reliable results will be obtained with a larger sample size, the data generated from a smaller sample is still of some use (provided it doesn’t contain an outlier- which is why I don’t know of anyone using data from single shots). The “shot” column represents the shot number in the respective string. etc. ... cleaning regiment, rate of fire. However, testing indicates it may not be as much as initially thought. The table above shows your barrel cost per shot, based on various "useful lives." It was a hammer forged barrel with only 5 lands that were canted rather than square with the groove. No, I did not. A good motto is "Too hot to hold, too hot to shoot." Overall Practicality: All in all, if you are new to the LR community and have an heirloom .243 in the family and that is it, re-barrel it and work on fundamentals. A 6BR barrel should give 2,200-3,000 rounds of accurate life, and a .308 Win barrel could remain competitive for 4,000 rounds or more. 0. The way the rifle is cleaned plays a big role in barrel life too, correct cleaning will increase barrel life. Wouldn’t that be awesome? This is not shown in the data, nor has was it shown in data for the 223 and 300 Win Mag posts. The barrel spent most of its life using 75 grains of H1000 to sling a 195 Berger at 2900 fps. Failure to do so may void warranties and result in an unsafe firearm and may cause injury or death. Never miss a post! I found this on Facebook, in regards to the 6.5 Creedmoor barrel length experiment,“I too love the 142 SMK. I hear you can get 3,000 to 4,000 rounds out of a 22-250 Remington. It is a solid value for the money. This was decision was made based on the very thin diameter of the barrel. Barrel Life on the .243 can range anywhere from 1,500 rounds to 3,000. It's just a neat round and has such good balance between performance and mild-manners/barrel life. By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. Too big? The .243 can be a great beginner gun … “28” barrel ft/sec” and “16.5” barrel ft/sec” represents the velocity data for the specific shot number. Even “shot-out” barrels in an infamous barrel burner like the 220 Swift are usually in excellent condition at the … I've ran 24-26" barrels and not had any problem getting 3100-3150 with 42-43gr h4350. It still shot one ragged hole if I did my part. A .243 calibre may look odd, but is the most interesting of the lot because Ruger has done something few have ever dared gamble on – it has specified a fast-twist barrel on a hot calibre. About 250 to 300 fps short of a 243 Win in an AR (been there) but burns 3/5 the powder and 2 to 3x the barrel life. He found that his barrels lasted from 400-500 rounds longer before the accuracy fell off. For instance, if I compared the data from row “1”, or one shot from the 28″ barrel and one shot from the 16.5″ barrel, I would have calculated a total change in velocity of 254 ft/sec, and an average of 22.1 ft/sec per inch. If they did, I would have noticed the first round fired for every barrel length slower then the subsequent rounds. While modern powder tends to be less temperature sensitive than older powders, the low temperature will undoubtedly yield slightly lower velocities than those expected at higher temperatures. 1500 rounds would be a good average of a .243 barrel life. What is the expected barrel life of our favourite rifle if we require at least 1 minute of angle accuracy? Not much of a differences to see in terms of performances only in numbers. And he would have had more measurement precision firing 10 shot strings and cutting off two inches at a time”. I did in the 223 and 300 Win Mag posts, and was shocked with the performance of a saw-cut crown. 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