Years back I experimented with Green Mountain .40 caliber round ball barrels trying out various molds, lubed boolits and paper patched, to see what if anything worked well enough to use in hunting. I never did find a combination that was consistent enough for me to put confidence in where my shot was going. how about you fellas? Anybody tried it and found the right magic for the GM .40's?

By the way, I'm gonna try that old Ideal 38-40 mold that I just never got around to.