Originally Posted by bsa1917hunter
Wondering why companies have to crimp the primer pockets on their 223 brass now?

To keep blown primers from getting down into the trigger of AR type rifles.

Found/stole a picture of the big vs small FC headstamps.

[Linked Image from diamondkbrass.com]

The one on the bottom with the big FC is the headstamp that can have the issue with primer pockets.

The small FC case on the top is crimped and in my experience is ok, but not as good as the multi-dotted cases. It is the only FC .223 Rem that does not have some type of dot/dots, all of which are crimped.

Last edited by mag410; 11/09/20.