The boogered chamfer photo is a 5.45x39 and came from this thread- http://www.m4carbine.net/archive/index.php/t-18015-p-5.html It did not cause any of the belted Grendel magnum case I posted photos of so you can stop using that as an excuse.
Ones post count on a forum has no correlation to level of knowledge on a particular subject.
