I did(kind of). I'm having a 300 PRC 30" bbl made and I'd like to save that powder for the heavier 250 a-tips, along with the N560 and 570. In the meantime I'm loading the the 230 A-Tips with 70.0 of 7828ssc into 28" 1:7 and getting great numbers at around 2875 with SG of 2.47. So on paper, I'm going subsonic at 1935 yards stabilized to bang the plate at 2000. some are worried the fast 1:7 will shed the jackets. I have not witnessed this yet out to 1300 and feel if i keep MV <2900fps I'll be fine. Hope to return to the mile/2000 range at end of month.