I shoot a Rem 700 LSS with a break on it. 64-65g of IMR 4350 in Rem brass, 9 1/2 primer, bullet touching the lands shoots sub 1/2" groups. You will have to tweek the load for the lot of powder. Brand of primer and Brass is critical in this load. In this gun, if I go to another brand of brass or change primer, groups open way up, Velocity is 3250 fps in this gun.