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Rifles, Reloading, Optics, Equipment
Reloading
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<blockquote data-quote="243winxb" data-source="post: 2883979" data-attributes="member: 97793"><p>Copper deposit build up is hurting accuracy. Barrel may need more Lapping.</p><p></p><p>Clean with an aggeessive copper solvent. Barnes Bullets Cr-10 Bore Cleaner.</p><p> Barnes Bullets started this many years ago. Copper Fouling. The answer was cut more grooves in the bullet. Helped some & also reduced the high pressure problem when using load data for lead core bullets.</p><p></p><p>Or change to Sierra bullets.</p><p></p><p>Virgin brass. Case volume will change after the first firing. An adjustment to load data is needed.</p><p></p><p>3 shot groups are almost always smaller then a 5 shot group. When i think i have the perfect load, i fire 4 groups of 5 rounds each. The average tells me the true accuracy of gun & load.</p></blockquote><p></p>
[QUOTE="243winxb, post: 2883979, member: 97793"] Copper deposit build up is hurting accuracy. Barrel may need more Lapping. Clean with an aggeessive copper solvent. Barnes Bullets Cr-10 Bore Cleaner. Barnes Bullets started this many years ago. Copper Fouling. The answer was cut more grooves in the bullet. Helped some & also reduced the high pressure problem when using load data for lead core bullets. Or change to Sierra bullets. Virgin brass. Case volume will change after the first firing. An adjustment to load data is needed. 3 shot groups are almost always smaller then a 5 shot group. When i think i have the perfect load, i fire 4 groups of 5 rounds each. The average tells me the true accuracy of gun & load. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Is this normal?
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