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jburrl90 · March 11, 2013, 05:13 PM

I recently started forming 30 herrett brass from 30-30 brass. I'm doing it in my full length sizing die with the decaping assembly removed. The cases chamber fine, however after firing I noticed a shiny ring around the shoulder. My primer also backed out a bit. When loaded again the primer stays seated when shot. I don't bump the shoulder when sizing the second time. But the first time they were full length sized. I believe the ring I'm seeing is the case stretching to fit the chamber is this correct thinking? And since the case now fits the chamber I'm assuming it can't stretch more and is safe to use. I cut a case open and I can see slight discoloring in that area. I anneal each case after I form it. So my question is if these cases are safe to use and if next time I form cases should I not push the shoulder back all the way to full length sized.

I'd appreciate any input I can get. Thank you.

March 11, 2013, 05:13 PM	#1
jburrl90 Junior Member Join Date: March 11, 2013 Posts: 9	head space problem? I recently started forming 30 herrett brass from 30-30 brass. I'm doing it in my full length sizing die with the decaping assembly removed. The cases chamber fine, however after firing I noticed a shiny ring around the shoulder. My primer also backed out a bit. When loaded again the primer stays seated when shot. I don't bump the shoulder when sizing the second time. But the first time they were full length sized. I believe the ring I'm seeing is the case stretching to fit the chamber is this correct thinking? And since the case now fits the chamber I'm assuming it can't stretch more and is safe to use. I cut a case open and I can see slight discoloring in that area. I anneal each case after I form it. So my question is if these cases are safe to use and if next time I form cases should I not push the shoulder back all the way to full length sized. I'd appreciate any input I can get. Thank you.