hmmm thats odd....goes against everything i ever heard....about how much over 100grs of powder your just blowing it out the bore because it doesnt have time to burn...(i seen it today at dusk with my 50cal...shooting 90gr of 2fg goex...i watch a little fly out the bore and burn..) and i just read in a magazine a 50cal round ball zeroed at 50yds drops about 50 inches at 200yds....just doesnt seem likely...unless he has some kind of special powder or something of the sort? and im not sure what a progressive tiwst barrel is either....maybe that makes it possible? and 46inches i guess he could get more powder to burn in there....but 400gr? thats ALOT of blackpowder....then again theres like a pound in a cannon......anyone smarter then me know? im kinda interested now....