603Country
New member
I’ve been loading a specific bullet for my 223 AR, using a medium powder charge, and using CCI BR4 primers. Never had a problem till today. I wanted to check the scope to see if the POI is unchanged. I had a 10 round mag full of the rounds with the BR4’s. The first round went Ok, but the second trigger pull ran off about 5 rounds, full auto. All those rounds had the BR4 primers. All rounds with the CCI 41’s were Ok. When I cleared the action, the unfired round that had been in the chamber (CCI 41 primer) had a lightly dimpled primer.
Why would rounds with the BR4 primer now be a problem, when they never were before? They might have a softer primer cup than the 41’s, which I knew, but again, it has never been a problem before. Only diff is that today is colder than my normal shooting days. Otherwise, all else is unchanged (brass, bullets, powder). The action isn’t very dirty.
All new loads for that rifle, now and for the future, are with the CCI 41 primers.
What do you knowledgeable guys think?
Why would rounds with the BR4 primer now be a problem, when they never were before? They might have a softer primer cup than the 41’s, which I knew, but again, it has never been a problem before. Only diff is that today is colder than my normal shooting days. Otherwise, all else is unchanged (brass, bullets, powder). The action isn’t very dirty.
All new loads for that rifle, now and for the future, are with the CCI 41 primers.
What do you knowledgeable guys think?