I have one of the savage 10ML muzzleloaders.. about 1.5" or better groups at 100, 300gr@2350. as you said, smokeless powder, non corrosive, clean it when i get around to it.. still dont think i'd shoot out past 200 with it though..its dropping an awful lot out there.. not legal in WA for muzz, but if I was going to gun hunt someplace like island Co. that has a 'no centerfire rifle' rule i'd use it.. but I've used it in OK, florida and MO for muzz seasons and it does just fine..