3100fps from a .300Mag? Send me some of that powder and I'll send you lead core bullets that yield better than 50% weight retention
Its too bad that you can't get the good Australian, Canadian and Swedish powders to really make the .300 sing. 3200 is within reach in a good 26" barrel, and 3150fps is my backed off load to save the brass. I've got H4350 load for a 26" barrelled 30-06 that idles along at 2850 fps, 1 grain under the maximum in the Hodgdon's manual.