If you're shooting factory loads and they're anything other than Hornady I'm afraid you'll never get ''on paper''. Factory 6.5 Carcano ammo is loaded with .264'' dia. bullets, Hornady uses .268'' bullets. Carcano bores normally slug .266-.269, and the bullets in the milsurp ammo I have measure .267''. I recently restored a M1941 Carcano and was out shooting up some PRVI stuff for the brass and the best 100 yd 6 shot group i could manage was a buckshot pattern of around 20 '', at 200 yds it was more like 5 feet. With handloads and .268'' bullets 100 yd 6 shot groups now average 3 1/2 ''. Despite the bad rap Carcano's can produce surprising accuracy with the right ammo.