Ok, this will be lengthy since I have 3 different rifles that shoot this and I use different powders for different rifles and weights of projectiles. I'll try to keep it straight.

For the M44, all projectiles are .311
150gr Hornady Interlock Varget 45.7 gr, 2.895 COAL
150gr Sierra Pro Hunter RE15 51.0gr

For the M91/30, all projectiles are .308
174gr Sierra RL15 46gr COAL 2.900
174gr FMJBT Accurate 4350 50gr
190gr Sierra Match, RL15 45gr, IMR4064 43gr
174gr Sierra Match, Varget 43.5gr
180gr Sierra Pro Hunter RE15 49.6

Russian Degtyaryov machine gun (DPM) .30 cal
150 gr Hornady SP Varget 45.7gr

This is what I do so far and have more loaded than I will likely ever shoot except for the DPM.