by now some company would have come up with non corrosive, smokeless type powder that's weighed by volume to use in muzzleloaders? I shoot 777 in my c&bs but I'd shoot more often if cleaning wasn't a big deal. I wonder why? ATF reclassification of guns? Lawyers? I think trailboss is close but that's all I've ever seen, and they warn against using it in anything but modern cartridge guns.