WestCo
AH member
I had a Rem 721 that was originally chambered in 300 H&H, had a gunsmith rebarrel it to 375 H&H. He mentioned that he installed a barrel with a 1:10.5 twist on it, and best I can determine doing the tight fitting patch and tape on the rod measuring, it checks out to be correct. I thought that he said it was a Douglas barrel, however now that I've put 50+ factory premium rounds down it and can't get better than 1.5" - 1.75" group at 100 yards makes me concerned there is something wrong with the barrel or it isn't a quality one? I've picked up some 300g TSX to start the reloading process, just don't want to waste my time if it isn't going to do any better. Any suggestions or ideas for any other smith's on here?