Originally Posted By: Chukarman
How many fairies can dance on the head of a pin?

For the record, GAUGE has nothing to do with the retained energy of the shot swarm. Shot size, pattern density, velocity at at impact , and target size/profile have everything to do with it. For any practical purpose the discussion would end there.

If we're thinking the whole swarm, maybe we should also consider the mass of the swarm to help figure out retained energy? Possibly, in a practical discussion, we can't really stuff typical 12ga. payloads and velocities into a .410 hull.