I can vouch for Seafire's load of 40 grains of IMR-3031. I had a box of 500 Remington 150 two diameter bullets that would surprise me at times with a group as small as 3 inches. Tried the above load and now every group has been 1.5" or less which some will sneer at but, I'll certainly take that over what I was getting. Can't duplicate that accuracy using those bullets with any other powder even at the same velocity.

Last edited by Joe; 11/26/20.
Shew me thy ways, O LORD: teach me thy paths.
"there are few better cartridges on Earth than the 7 x 57mm Mauser"
"the .30 Springfield is light, accurate, penetrating, and has surprising stopping power"