Getting back into reloading after many years. My old go to load for my 98K WW 2 surplus Mauser was 44 grains of IMR 3031 with a 150 grain Hornady bullet. About 2500fps and good accuracy. I have old manuals that list this as a moderate load. I still have 2 full one lb cans of 3031 about 20 year's old. A friend told me that if Ibuy new powder, the loads recommended in my old manuals are no longer safe because IMR powders today have major different characteristics than the old powder. Anyone know if this is a valid concern, or is it just been being overly cautious?

Thanks for any input.