I have a new 7mm Rem Mag that I have been trying different factory ammo in to see what it likes the best . I am setting up this rifle for hunting at a maximum of about 500 yards or so . After trying about 7 different brands , some of which that I already had , the best I can get out of it is a 5 shot group of 7/8's inch . Three of the 5 are touching and the other two are about a half inch from them . Is this good enough or should I keep looking at different ammo ? By the way , Fusion 150 grain is what the has been the best so far . Has anybody had any experience with this ammo ? Thanks