Oops Kurtz you slipped in there before I could finish typing. Dunno what to say. I just set a 180 gr round nose (which really rides tight in the feed ramps) .220" in to a sized piece of brass and maually fed it from the magazine and it unseated .008". The brass was from Davis which has .004" neck tension so once again I know the bullet will move. One other difference is whether your chamber is tight or not. My 300 fireball chambers freely with the shoulder stopping the case movement not the body.
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