I've worked up 2 loads for this and I'm .5 grain below max for each load and no where near what I expect for Mv's. Loads are 62.5gr Rl-22, cci 250 pr 160 gr nos accu's (2880)fps 2-5shot avg Imr 7828ssc 63.5gr cci 250 pr 160's (2835)fps 2-5shot avg Both sd's 12 and 15 . I want to be at 2950-3000fps. Any advice welcome.