I used a LOT of it back in the 70's. Mostly in my SBH, for handgun silhouette.
It did have a drawback though. it's burn rate and the fact that it's a fine grained ball powder, resulted in it burning very hot right at the cykinder gap of most revolvers. It would destroy the back of the barrel and forcing cone after extensive use. It did mine! As soon as I noticed it, I sent the gun to Ruger to have a 10.5 bbl. installed.
Use of it in a closed chamber such as all auto pistols, would negate the problem. I still have a pound of it somewhere in my stockpile, if you come up with a load, I'll be interested. I'd say it would work good in 40 S&W with heavier bullets. Best use would be 357 sig or 38 super!
Hmmm, gotta go see if I can find that pound of 630, sounds like a project brewing!
