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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
new barrel break in
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<blockquote data-quote="J E Custom" data-source="post: 737979" data-attributes="member: 2736"><p>There are some that don,t believe in brake in and others like myself that will not shoot any</p><p>new barrel without some break in.</p><p></p><p>I start break in from the first high pressure test load (Proof test) and clean after every shot</p><p>for an undetermined number of shots by reading the barrels performance.</p><p></p><p>I will start with a load and stick with it until I see an improvement in group size and ease of </p><p>clean up.</p><p></p><p>Most rifles will improve by 100% after 8 to 10 shots and may continue improving for 15 to </p><p>20 shots. (Note: these are custom barrels) factory barrels are normally much more.</p><p></p><p>Once a barrel settles in, then I can start trying other brands of ammo or load development</p><p>without it being a wast of time and money.</p><p></p><p>I learned my lesson with a rifle that shot less than 1 MOA with almost any ammo. After a range</p><p>session I would clean it until no copper fouling was present. The next time at the range it </p><p>performed almost identical to the last time, so I assumed that was as good as it was going to </p><p>get without working up some magical load.</p><p></p><p>300 rounds+/- later I had still not found any improvement in accuracy or clean up, So I decided </p><p>to do a full blown break in To see if it would improve. It took 12 shoot and clean shots before it</p><p>all came together. It went from .900 MOA average to .112 and after two sets of 3 shots and clean </p><p>it settled in at less than a 1/10 of an inch for 5 shots and a SD of 8. </p><p></p><p>It is a 30/378 and it now has 800+ rounds down the tube and has not fell off that 1/10 of an inch </p><p>if I do my part. While hunting I allways pull a bore snake through after each shot to sweep out</p><p>the powder fouling and I,m ready to go.</p><p></p><p>Anything run down the barrel will shorten barrel life some. but I believe that a clean bore does the least ammount of damage/wear and appears to lengthen barrel life. So I will take that chance to have a real performer.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 737979, member: 2736"] There are some that don,t believe in brake in and others like myself that will not shoot any new barrel without some break in. I start break in from the first high pressure test load (Proof test) and clean after every shot for an undetermined number of shots by reading the barrels performance. I will start with a load and stick with it until I see an improvement in group size and ease of clean up. Most rifles will improve by 100% after 8 to 10 shots and may continue improving for 15 to 20 shots. (Note: these are custom barrels) factory barrels are normally much more. Once a barrel settles in, then I can start trying other brands of ammo or load development without it being a wast of time and money. I learned my lesson with a rifle that shot less than 1 MOA with almost any ammo. After a range session I would clean it until no copper fouling was present. The next time at the range it performed almost identical to the last time, so I assumed that was as good as it was going to get without working up some magical load. 300 rounds+/- later I had still not found any improvement in accuracy or clean up, So I decided to do a full blown break in To see if it would improve. It took 12 shoot and clean shots before it all came together. It went from .900 MOA average to .112 and after two sets of 3 shots and clean it settled in at less than a 1/10 of an inch for 5 shots and a SD of 8. It is a 30/378 and it now has 800+ rounds down the tube and has not fell off that 1/10 of an inch if I do my part. While hunting I allways pull a bore snake through after each shot to sweep out the powder fouling and I,m ready to go. Anything run down the barrel will shorten barrel life some. but I believe that a clean bore does the least ammount of damage/wear and appears to lengthen barrel life. So I will take that chance to have a real performer. J E CUSTOM [/QUOTE]
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new barrel break in
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