Thread: 223 help

Primers don't protrude just flat level with the back of the case

Things that would increase pressure - projectile seated to deep, short lead, tight throat, excessively low case capacity. Shoot your loads through another AR and have a look. I have only ever seen thermo-nuclear warm handloads give blown primers in a Nato cut chamber. That was an insanely hot 77gr load.

Originally Posted by northdude

Attachment 73775

Shit that's not good. One thing, see the pin strikes are of different depths?
Head space?
What primers are you using?
Maybe the chamber is out of spec?

I would hesitate to keep shooting that until a gunsmith has looked at it.

Originally Posted by 300CALMAN

Shit that's not good. One thing, see the pin strikes are of different depths? Head space? What primers are you using?

cci

@northdude invest in a wilson case gauge it could be an issue with how your resizing your brass also
Have you tryed factory ammo if its the rifle you'll get the same issues with that
Also

havnt tried one ill run some factory I got today through it and see what happens

Factory will tell you right away if its a rifle issue or a loading issue it could be ether
My geuss is rifle did I hear you right that you replaced the barrel? Did you install it correctly maybe a silly question I don't know much about ar's

theres a little bit of soot on the ones with the pierced primers I'm guessing its come out from the hole in the primer yep its had a different barrel they only go on one way

i use a rubber band(old tube) or a cable tie pulled over the trigger on a drill sitting in a vice for all the case tools.

Thanks guys going to take it apart and get headspace checked first

ok many thanks to one of our gc forum members it appears I have a rather bad headspace problem

Originally Posted by northdude

ok many thanks to one of our gc forum members it appears I have a rather bad headspace problem

Good stuff. If that bolt worked OK in a different barrel I would be suspicious of the barrel. If the bolt is OK, head space is adjustment on an AR barrel is a major.

great to read you now know what issue is....now get it sorted then go shoot some more....all that stress needs some recoil therapy.

you bet and a nice shoulder massage