My current load is 69gr H4198, 300SST, MMP-12 sabot, CCI-M primers.
All shots at 100 are alll but touching. Recoil is a bit stout. Will stay with this load for this year. Will miss some of ML season due to going to Co. elk hunting. Still use ML durning regular rifle season tho. If the reports come back good on the TC Bonded SW this year, I may go back to a 250 gr. bullet. The 250 SST were not great performers for me. Hopfully the 250 TC B SW will hold together better.
Current load is around 2450FPS at muzzle. Can get around 2650fps with this powder and 250gr bullets at a very safe presure. That's the thing about H-4198. More recoil but low presures.
good luck,DM