“300 BO, for me, is the only disappointment in the group and that's only because I had a Ruger American that wouldn't shoot most ammo. It would dent the primer, but wouldn't go bang. 2 trips to Ruger couldn't fix it. Just not worth staying with that caliber with all the others available. But, it will get it done with little to no recoil.”
I had the same issue, which was a headspace problem. Loosened up the nut and gave the barrel a slight turn in to tighten the headspace and problem went away. It was a problem with some of the early ones, from what I read on the net.
