.300 Ackley
I shoot the 210 VLD Jammed .015" into the lands. With my current lot of Reloader 25, 77 gr. is 3025 fps and 77.5 is 3050 fps for a 31.25" 11" twist 5C Broughton. My Ackley case holds 103 gr. of H2O using Norma .300 WBY brass, unfired .300 WBY was around 97 - 98 gr. of H2O. This cuurent lot is a full 2 grains hotter than my last lot. 79.5 gr will put it way over 3100 fps... That is why I would start around 72 gr. with the .300 WBY chambering. Emert, check out Hawk's Ridge results for the most popular powders. RL22 or RL25 will be what you'll find.
Baron