I have a Handi in 500 SW. I want to load 350 grain bullets between 1400-1500 fps with the powders I have on hand - IMR 4227, 3031, SR4759, & Trail Boss. I think the SR4759 should be great for this but I can not find any load data anywhere. I have tried up to 14 grains Trail Boss but the velocity is still too low and the case is full.
Can anyone give me some recommendations using the powders I have listed? Especially 4759.
Thanks