anyone have any 257 roberts loads ? i tryed a win ww super case, cci br-2 primer...RL17 and a hornady 117 soft point boat tail..with not much luck. was able to push it to 3,050 FPS with 46.5 grs RL17 out of a 22" barrel. but accuracy was not that good at this point, but new rifle. barrel was fouled, needs cleaned and copper removed,,only have like 24 rounds threw it..but does have some copper i can see..