Got a custom 300 PRC barrel built for my AXMC. finally got around to taking it out today to shoot. it was extremely tight when trying to chamber a round. I hard to push down hard to get the bolt down. I had a well known experienced ELR shooter look at it, and we put two rounds through it but have some interesting marks on the brass. doesnt seem unsafe to shoot, but i think i will have accuracy/velocity problems. When the barrel is out the round seems like it fits in very nice. Any guesses on the problem? I plan on taking it to a smith this week.