Got my Remington Custom KS back from the smith and he did some tweaking to the bedding . Loaded up some bullets and went to the range. Shot groups of 2.5 +/- with the Nosler 140 gr BT @ 100yds using RL 22 powder and Fed. 215 primers with a OAL of 3.6 and powder charges of 71,73,75 gr all shot the same . What do I do to make this thing shoot tighter groups? Bullet weight? Bullet choice? OAL ? Any and all help welcome. What size group should I be getting or sholud I expect out of my rifle? 22in barrel and I belive a 1in 10 twist.