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243winxb · January 22, 2012, 07:45 PM

Mixed headstamp may grow at different rates. You might get 2 firings before they start to reach the maximum of 1.760" I would load & shoot till too long. Only trim now if your going to crimp using standard dies. No crimp needed IMO. Are you sure the brass will chamber in your firearm?

January 22, 2012, 07:45 PM	#2
243winxb Senior Member Join Date: July 26, 2011 Location: USA Posts: 1,730	Mixed headstamp may grow at different rates. You might get 2 firings before they start to reach the maximum of 1.760" I would load & shoot till too long. Only trim now if your going to crimp using standard dies. No crimp needed IMO. Are you sure the brass will chamber in your firearm?