I have a nice looking swedish mauser that was sporterized by Kimber of America. Built on a 1911 action with matching numbers. I had hoped to have a nice deer rifle but I'm finding it to be a very picky shooter. Tried Prvi Partisan and Federal ammo and have inconsistent grouping. I've handloaded the Prvi cases with 39grs IMR 4350 & Hornady 140gr bullets and have fair success. Shooting 3 rounds at a time I have 2 hits about 1in apart with 1 flyer about 6in away. Am I loading too light? Lighter bullet? Get rid of the rifle?