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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Barrel Break-in And Cleaning Methods
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<blockquote data-quote="J E Custom" data-source="post: 1559921" data-attributes="member: 2736"><p>It started to be consistent after 8 to 10 rounds and remained within 15 ft/sec from then on using the same load. Then I started trying to improve the load velocity and SD's and it changed based on the powder type and charge, but when changing back to the original brake in load. velocities returned to within 10 to 15 ft/sec of the original velocity after break in. I had loaded 20 rounds for brake in and used the remaining rounds to check Barrel progress. I did not have very many of the brake in loads so i fired only one occasionally between load test after it was cleaned and dry patched. each time, they fell within 12 ft/sec of the original load. so the barrel had settled down to a consistent velocity only effected by the load development loads.</p><p></p><p>The final accuracy load produced velocities of just under 3000 ft/sec</p><p>with a SD of 6. to date I have not bested this load, and the last of the</p><p>brake in loads are gone. but I can duplicate these loads if need be. The next step is to find out where accuracy falls off by copper fouling the barrel (How many rounds can be fired of the best load Starting with a clean barrel). To do this I clean the bore really good and fire until I see an accuracy or velocity change.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1559921, member: 2736"] It started to be consistent after 8 to 10 rounds and remained within 15 ft/sec from then on using the same load. Then I started trying to improve the load velocity and SD's and it changed based on the powder type and charge, but when changing back to the original brake in load. velocities returned to within 10 to 15 ft/sec of the original velocity after break in. I had loaded 20 rounds for brake in and used the remaining rounds to check Barrel progress. I did not have very many of the brake in loads so i fired only one occasionally between load test after it was cleaned and dry patched. each time, they fell within 12 ft/sec of the original load. so the barrel had settled down to a consistent velocity only effected by the load development loads. The final accuracy load produced velocities of just under 3000 ft/sec with a SD of 6. to date I have not bested this load, and the last of the brake in loads are gone. but I can duplicate these loads if need be. The next step is to find out where accuracy falls off by copper fouling the barrel (How many rounds can be fired of the best load Starting with a clean barrel). To do this I clean the bore really good and fire until I see an accuracy or velocity change. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Barrel Break-in And Cleaning Methods
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