We had the opportunity to actually see the shot string out my .410 yesterday against the sky, and with that tight choke it appears to be about a foot across at 25-30 yards! I don't know what the choke is for it, so I probably should check that out! It really forces you to be on your bird! I'm shooting Cheddite 3-inch loads. These are the primed, never fired Cheddite hulls, and I find that they're universally tight to put into the chamber. I'm eager to see how they re-size in my reloader.