Thread: CCI BR4 vs CCI 400 primer’s

Just an update on this .

I borrowed a mates bore scope and inspected the inside of the bolt to make sure that there wasn’t any rubbish or damage internally that would be effecting the travel of the pin , it was as clean as a whistle
I loaded up 25 rounds ( 5 different powder charges - 2206H ) with CCI 400 primers - 80gr eldm and shot them on the weekend .
I had zero problems with misfires and the testing was a success - 23.4 gr was the most accurate .
I then tried a couple of rounds with BR4 primers and they failed to fire .
I’ve ordered a new main spring from Gunworks and will see if that fixes the light primer strike on the BR4’s .
It’s an old rifle , so my suspicion is the spring is tired .