I tried all the powders Luke recommended, H322(80gr), IMR_4198 (70gr), BH_209 (115br) and they all
yielded the velocity he said and were extremely accurate. Have heard Benchmark works, and 8208xbr too.
Good luck with yours.
Shot this one this year with the 350gr XLD. Standing slightly angled towards me. The bullet went in the left side of his chest and exited just behind his right shoulder. Absolute perfection IMO. It picked him up and he went end over end, DRT.