My eyes might be deceiving me but it sure looks like a large variation in the oal of the cases? I am looking at the crimping groove on the bullets. That might be bulging your cases out. Maybe measure with a micrometer the diameter of those 4 rounds and probably the one not chambering is bulged out. I would sort the casings by oal to have consistent seating depth and crimping.
Ed
Last edited by nedlate; 02-04-2012 at 12:52 PM.
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