That's one helluva shot, Lemonater. I think the farthest I got with the shotgun was about 120meters, on PhosphatePlant if I recall.
Shotguns firing 00 buckshot could probably tear limbs off and destroy heads if the ranges are close enough. At 10 meters the shot pattern of 00 buck in a cylinder (or open) choke is about the size of a slightly large human fist. That could tear through an elbow, shoulder, or a knee for sure.
A slug could probably do it as well. It's 1oz of solid lead death flying at 550m/s containing 4200Joules of energy upon flight. These things are used for hunting large game. That's something you don't want to be in the way of. I don't know if slugs were used in WWII though.