My 7WSM was identical to yours. It took a bit of doing but after bedding and installing a Timney trigger it would stay about 3/4MOA with 150 Sciroccos and about 1/2MOA with 160 Accubonds. The furthest I every shot it on the range was 850 and the longest big game kill with it was 750 on a smallish 6 point bull. It was my first long range rifle and I wasn't too kind on the bore (shooting too fast, too much brushing, etc) so when it started going bad on me, I had it rebuilt into another 7WSM. Now it will stay sub 1/2MOA out past 800 with 168 Bergers.
I've always used Winchester brass and always been happy with it. I get probably 6 or 7 firings from a piece of brass and for the price think it's pretty much a bargain.
Good luck with you Coyote!!!
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