Over the past 5 years I have been fire forming BRX cases with absolutely no issues with a few different methods. Standard way has been with a false shoulder and a 105 amax jammed .030 with about 29.7 grains of varget cci 450 primers or wolf mag and then I always shoot another light load through them to harden the case head and get them formed all of the way.
Last year I did did two hundred or so with cream of wheat meathod and false shoulder with cci 400 primers for the first round, and out of them I had about 5 lightly pierce the primers and did not really think too much of it.
So last week I started fire forming cases for my 6BRDX. With all of the talk about using standard primers I did the false shoulder and jammed 105 amaxes (.003 neck tension) in .030 with 29.7 grains of Varget and cci 400 primers.
I loaded 30 up and went to the range. First shot worked and it looked alright, fired the next one did not look at it and the third one pierced hard and bent the spring in my Jewell trigger and I was done. I then looked at the second case and it too had a very light pierce in the primer, but even if I would have seen that I would have still tried another one and still would have broke the trigger. The one that broke the trigger had a big hole in it!
So no I am not happy, go home spend a hour fixing my trigger and try to load up my next test round.
I double checked my false shoulder and my seating depth, checked my head space on the barreled action, dropped 2 more sizes smaller on the neck bushing, and dropped the charge to 28.0 grains with cci 400 primer.
Go to range and sure enough it still pierced the primer.
So now I am frustrated and go back home and do the same load with a wolf mag primer instead of the cci 400 and go back to the range.
Worked fine, loaded up 41 more and had no issues.
Moral of the story is....that sometimes mabey the standard primers are not the best idea and there is no point in them with using the false shoulder since the case can't be driven forward anyway.
Yes I know some of you use them with no issues and yes this is a custom action.
Just passing on my lessen that I learned and also had the pleasure of adding another Jewell trigger to my tool box.
Good luck,
Last year I did did two hundred or so with cream of wheat meathod and false shoulder with cci 400 primers for the first round, and out of them I had about 5 lightly pierce the primers and did not really think too much of it.
So last week I started fire forming cases for my 6BRDX. With all of the talk about using standard primers I did the false shoulder and jammed 105 amaxes (.003 neck tension) in .030 with 29.7 grains of Varget and cci 400 primers.
I loaded 30 up and went to the range. First shot worked and it looked alright, fired the next one did not look at it and the third one pierced hard and bent the spring in my Jewell trigger and I was done. I then looked at the second case and it too had a very light pierce in the primer, but even if I would have seen that I would have still tried another one and still would have broke the trigger. The one that broke the trigger had a big hole in it!
So no I am not happy, go home spend a hour fixing my trigger and try to load up my next test round.
I double checked my false shoulder and my seating depth, checked my head space on the barreled action, dropped 2 more sizes smaller on the neck bushing, and dropped the charge to 28.0 grains with cci 400 primer.
Go to range and sure enough it still pierced the primer.
So now I am frustrated and go back home and do the same load with a wolf mag primer instead of the cci 400 and go back to the range.
Worked fine, loaded up 41 more and had no issues.
Moral of the story is....that sometimes mabey the standard primers are not the best idea and there is no point in them with using the false shoulder since the case can't be driven forward anyway.
Yes I know some of you use them with no issues and yes this is a custom action.
Just passing on my lessen that I learned and also had the pleasure of adding another Jewell trigger to my tool box.
Good luck,
