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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Fire Lapping a Barrel
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<blockquote data-quote="Bart B" data-source="post: 799488" data-attributes="member: 5302"><p>I don't think a Kreiger barrel needs to be "conditioned" in any way. Too many folks have shot them as is and won matches setting records doing so and so on and so on.......</p><p></p><p>Nor does any other barrel need to be "conditioned" if it's made right. If it ain't made right, why buy it in the first place?</p><p></p><p>Any time the hole in a barrel's made bigger, there's less resistance to the bullet starting down it and pressure will be less. So will muzzle velocity.</p><p></p><p>Every "rough" bore barrel I've shot produced better accuracy after a few rounds laid copper in those rough spots so subsequent bullets would not be unbalanced from jacket material being scraped off. Never ever had one that had accuracy get worse after copper fouling.</p><p></p><p>The most accurate barrels I know of all have the same bore and groove diameters all the way from leade to muzzle. No taper whatsoever. Good barrel makers lap barrels to less than .0001" spread the entire length of the rifling when the blank's finished. Fire lapping a barrel makes it taper tighter from its hind end forward. Borrow a Sheffield air gauge then measure your fire lapped barrel.</p></blockquote><p></p>
[QUOTE="Bart B, post: 799488, member: 5302"] I don't think a Kreiger barrel needs to be "conditioned" in any way. Too many folks have shot them as is and won matches setting records doing so and so on and so on....... Nor does any other barrel need to be "conditioned" if it's made right. If it ain't made right, why buy it in the first place? Any time the hole in a barrel's made bigger, there's less resistance to the bullet starting down it and pressure will be less. So will muzzle velocity. Every "rough" bore barrel I've shot produced better accuracy after a few rounds laid copper in those rough spots so subsequent bullets would not be unbalanced from jacket material being scraped off. Never ever had one that had accuracy get worse after copper fouling. The most accurate barrels I know of all have the same bore and groove diameters all the way from leade to muzzle. No taper whatsoever. Good barrel makers lap barrels to less than .0001" spread the entire length of the rifling when the blank's finished. Fire lapping a barrel makes it taper tighter from its hind end forward. Borrow a Sheffield air gauge then measure your fire lapped barrel. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Fire Lapping a Barrel
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