A trained marksman could consistently hit a 4" square at 200 yards.

I think they had better powder than us. Curtis & Harvey is reckoned to have been the best one around. Even the Americans pre war,post war and during the Civil War,preferred it to their own makes.

The British also used swaged bullets so they had absolute consistency with every bullet.

The strange thing about BP is that some days they can be deadly accurate and another day they are all over the place. I've never figured out if it is the gun, theweather or the shooter that is fault. Probably the latter!

Have fun.