If the gun fits you and doesn't slap your cheek, shooting a 20m gauge fowler with a ball is not hard on your shoulder or cheek. I shoot 86 gr. FFg in my Chambers' Pennsylvania fowler with a tightly patched 600" ball, without discomfort. In truth, the ball weighs less than the shot column in most cases, but it feels like a ball creates more recoil. Still, it is not unpleasant. My old Jaeger in .60 cal with the same load was also very pleasant to shoot. the butt shape makes a bit of a difference. My Hawken at 12 pounds, .62 cal., with 350 gr. ball and the same charge doesn't raise a bruise offhand, but prone is a different fish.