Well, this is a first for me!
Rifle: DPMS AP4/carbine gas, circa 2007. Non-chrome bore/chamber, but chamber cleaned prior to this trip. Brass failure occurred ~200 rounds into the trip.
Ammunition: My own reloads. LC08 case, Tula KVB-223, 25.5gr H335, Hornady 55 FMJ
First off, I'm not overly...