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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
243AI case splitting problem when fire forming
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<blockquote data-quote="Fiftydriver" data-source="post: 35114" data-attributes="member: 10"><p>dbholster,</p><p></p><p>When properly chambered liek the way I do teh AI rounds and the way any top smith better chameber them, there is no need at all to seat the bullets into the rifling. </p><p></p><p>In fact all this does is create the possiblility for pressure problems.</p><p></p><p>With a proper 0.004" to 0.005" crush fit in the shoulder, the case is supported by the chamber and simple can not stretch forward.</p><p></p><p>Your chamber is probably chambered correctly, if it is then on virgin brass you should be able to chamber a round and feel that slight crush of the shoulder, you should also be able to chamber a round and then eject it and visually see a bright line around the neck/shoulder junction which is the crush line.</p><p></p><p>This is all you need for proper case control and when chambered this way, my rifles will generally average in the 1/2 moa with virgin brass.</p><p></p><p>I'm not questioning your loading technique at all, just that if your rifle is chambered correctly, which it probably is, you do not need to seat the bullets into the lands.</p><p></p><p>Good Shooting!!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 35114, member: 10"] dbholster, When properly chambered liek the way I do teh AI rounds and the way any top smith better chameber them, there is no need at all to seat the bullets into the rifling. In fact all this does is create the possiblility for pressure problems. With a proper 0.004" to 0.005" crush fit in the shoulder, the case is supported by the chamber and simple can not stretch forward. Your chamber is probably chambered correctly, if it is then on virgin brass you should be able to chamber a round and feel that slight crush of the shoulder, you should also be able to chamber a round and then eject it and visually see a bright line around the neck/shoulder junction which is the crush line. This is all you need for proper case control and when chambered this way, my rifles will generally average in the 1/2 moa with virgin brass. I'm not questioning your loading technique at all, just that if your rifle is chambered correctly, which it probably is, you do not need to seat the bullets into the lands. Good Shooting!!! Kirby Allen(50) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
243AI case splitting problem when fire forming
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