It would be nice to find a shop that has that setup to have these 2 checked/or repaired as necessary. Anyone know a shop that has these fixtures to check out carbines ?? Until then, will load from only a magazine, kids will get the proper training as well. Next loading I'll go to the harder primers. One last note. I have a can of
LC-72 CMP 30 carbine ammo. Other day, I took some of those rounds out and did the same test on them. Loaded in singles, primers were slightly marked, but none out of 50 discharged. All had a mark on the primer about equal to what fired the CCI primed reloads. I know the one from the DCM makes a mark just as deep as the one from a unknown, no difference. Yes, I'm sure it's likely both were worked on at some point, carbine #2 has a BA rebuild mark on the stock and some mixed parts. Carbine #1 has all Winchester parts ( DCM carbine ) and no rebuild marks. Only reason I mention any this to begin with is the OP is asking about primers and if it could make a difference. I would answer yes to that. In the interest of safety, thought it good to mention what happened with mine. I'm sure that there are many other carbines out there that will slam fire this way as well. Be safe,
Chris