About 12 years ago I took the head off a rattlesnake from 6' away with the original CCI 38/357 snake shot load out of a 4" GP100. Starting in March or April, I put a snake shot load into the first chamber of my revolvers when I go out into the woods and continue to do so until deer season begins here in VA.
I tried the 9mm snake shot in my G19, but it wouldn't cycle. I'll have to try it again with the G48.
Chris