Wow, thanks for all the great advice guys. I measured a few of the rounds that I loaded last night and most of the case mouths were in the range of .375-.377. This appears to be in line with what the consensus of this group seems to be. I didn't trim the cases so I expected there to be some variation in the crimp. I'm also using the seating die to crimp the cases rather than the Lee factory crimp die, which I don't have. Thanks again for all your help. As soon as we dig ourselves out of the snow here in the midwest I'm gonna try to get to the range so I can test these out.
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