Most of the discussion on this round is for target rifles with a freebore that’s too long to mag feed in a short action. I acquired a reamer last spring that was specifically designed for that purpose. I had a few friends wanting a short action repeating 7mm short mag of a sort. One did a 7wsm, one a 7saum and I ended up with this one. I wasn’t sure where speeds would end up, especially since I wanted a short, handy barrel length. 22” 3b Bartlien is what I ended up with. Pressure topped out at 59gr of h4831sc with a heavy bolt. Backed down to 58.7 and found a very consistent 2763fps with a 180gr hybrid at 2.950”. I can load to 3” with my internal box mag but the reamer is set for that length. This speed is with a basically new barrel so I expect it will speed up some as I go forward.
Hope this helps those looking this direction.
Hope this helps those looking this direction.