I have have savage model 10tr 308. Im trying to get a good group with it at 100 yrds and its bad about 3 inch square and 3 shot groups. Im using hornady white tail interlock 150 grain. Has anybody else had this problem? Ive been told that the 165 grain is more accurate but i bought 2 boxes of this ammo and i live in manitoba can. So ammo is not cheap 38 bucks a box so i cant jus throw it out. Also i dont do hand loads i dont have the equipment. Ive only been out twice with this gun so its possible i wasnt shooting my best. Also whats the best ammo anyone has used with this gun. I mostly hunt whitetail and might try black bear and i want to stick to one type ammo.