39.5 grs BL-C(2) gives me 4350 fps from a Sako 24" bull barrel (that's one gr under book max). Find the 36 gr too easy to blow around and a bit too explosive for my liking, so I now use a .243 with 55 gr BSTips at 4000 fps with H414, easy with H4895 and nowhere near max. Very effective on coyotes.