My son purchased some .308 ammo, 2 brands. Tried to load and could not push bolt all the way in, ejected the casing and bullet was stuck in chamber, tried another bullet, same results. I put a mic on the remanding bullets and the 2 that were stuck and they were .310-.312. 2nd brand performed flawlessly. Contacting the ammo company tomorrow. What is the proper protocol? Any and all comments are appreciated from the gurus, Thanx.