If the bullets are tumbleing it may fouling matainence.. But more than likely, his bullets are too hard...this was the cause of tumbeling in my 45-120.
This is most likely the case, because a soft(er) bullet will obturate..and they seem to be able to handle more fouling..
Anealing cases will sometimes cut a groups size in half or better....but that is not causing the tumble.
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Last edited by freedom475; May 7, 2013 at 04:50 PM.
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