My Mosin has become a case queen ever since I got my Arisaka.. So I want to change that and start reloading for it. I have a 1942 91/30 Sniper... My main question is what size bullet should I use? I thought they shot a .3105 bullet, but my book says .308, and C3 said they should measure out to 7.92?? Im so confused.... What weight should they be? Ive shot 150 gr. surplus ammo and it constantly shot low, so im thinking something in the 175 gr. area? What specs was the WWII Russian ammo made to? Thanks!