Having played with a 7WSM a lot this year, the greatest limiting factor is the LOUSY brass that Winchester makes for it-as far as I know, they are the only ones making 7WSM brass.
I tried to buy 300WSM brass. I had Norma backordered at Graffs for 120 days before I finally got it recently. I got some Federal before that but it is no better than the W-W brass. It belongs to my buddy, if it were mine, I would set the barrel back and rechamber to 7x300 WSM- as it is, all the 300 stuff has to be fire-formed to blow the shoulder out and shorten the neck.
Too much trouble for me to ever buy one myself. Hope yours is a shooter, the one I have been playing with is a Savage 116 custom shop rifle and it does shoot very well when I can put 5 good pieces of brass together!
It shoots the 180 Bergers into about .5-.6 MOA so far. Been too windy and then too hot to really wring it out this year.
