410 Handguns,

[Travlin]

The cast bullet site has a whole section about shot loads for handguns.

[fortyshooter]

It's just a compromised revolver trying hard to be two things at once. The bit of rifling screws up shot pattern along with short barrel reducing shot velocity and not enough rifling for good 45 Colt.

[graywolf]

I looked on the cast bullet site last night but didn't see part about shotshells. I have shot a couple rattlesnakes or so with .22 shot shells. They do the job, but you have to be closer than I like to get. Being that close, I can hit them with a regular round.