Quote:
Originally Posted by emcon5
Unless, and this is a big unless, the neck tension was inadequate in the 300 round and it slamming into the chamber pushed the bullet farther into the case (and the powder charge was such that there was room in the case to do so). It is also possible that the rifle was not completely in battery.
|
This is probably exactly what happened - inadequate neck tension, and maybe an extremely long ogive like the bullet on the left. That one looks like it might chamber in a .223 chamber even if the bullet were not pushed back.
I'm not sure than an AR can fire out of battery, though. Unless it were as equally poorly assembled as the ammo. There are plenty of those out there - homemade AR's assembled from cheap, missmatched components that have no business being fired around other people.