No idea how far the weight actually was from the crank centerline, but 4" from centerline would give a circumference of about 25" - or 25" travelled per revolution. At 7600rpm that's 126.7 revs per second, 25*126.7 = 3183.5 in/s, or 265.3 ft/s, or about 180mph. I definitely wouldn't want to get hit with it, but not necessarily a gunshot level of velocity.
I'd have to watch it again, but that mallory(which is heavy) looked to be 2-3× the size of a 12ga. slug, Energy = mass x velocity squared, so for rough-guessing 2.5oz(.15625lb.) x 265.3 sq.'d(70,384) = 10,997 lb./ft. That's 20x a full load 357 Mag.
Std. 12ga slugs being typically 1oz. & muzzle velocity of 1350-1550 for sabots, & 1600-1760 for rifled slugs.
Yeah, You don't want to take any of these to the chest, :eek: !!!
