Yeah Bigcountry, such MOA groups ARE possible with muzzleloaders.......... especially when shooting off of the bench. But I figure a lot of that depends on practice and a LOT on load development as well. My little Knight USAK just refuses to shoot any of my worked up loads poorly - not matter how hard I try to screw up a shot.
For instance, last week I was shooting a postal match which specified a certain target, with 2 tigers on it - each with a bullseye the size of a Quarter. The point was to kill one of the tigers on the page in less than six shots - with 1 bullseye or 3 body hits designating a kill. These were to be shot offhand standing. Well it had gotten pretty breezy Friday as a storm was moving in and shooting these with my M1A and .22Mag didn't work that well, so with only 15min of range time left - I pulled out my trusty USAK. I fired 1 fouling shot to prep the bore and then I shot this target at 40yds:
Dead Tigers
In the same windy conditions, I shot the bottom tiger first - that shot took me by surprise, so I had to try again on the top tiger - and DANG if I didn't bullseye it too.
So, YES these guns can do it................but finding THE load has a lot to do with it.