Ran out of techniques to get 40 grains of 3F BP in 45 Colt Starline cases reliably. You can get the powder in there, and even mash a 255 grain cast bullet on top of it, but getting it to chamber reliably in a variety of revolvers just isn't in the cards. Not sure how the guy on "all things black powder" does it unless his revolvers have looser throats. I shot up all the tests in the 1866 this morning which digested them without issue.