between the 150's and 170's I'd use 170's they fly better, hit harder down range......hornady now loads 160gr pointed, which are safe for tubular magazines. those 150/170 had a 200yd range, now with the 160s you can shoot antelope/deer at 300yds and have enough juice to drop one. So if you need to shoot 300yds go with those 160s, otherwise Id stick to the 170s. Try some brands, to find which work best.