I see several entries for snake shot. I grew up in a part of Florida that was simply called 'Rattlesnake' by the original white settlers. I worked in the swamps and boonies as a land surveyor and saw lots of snakes and gators. Folks you don't need snake shot. You just need to back off five feet and watch them flee.
I have stepped on gators not knowing that they were there and I have never been attacked or even threatened by them.
It ain't the 'critters' that worry me!
And snake shot probably wont stop a drug crazed mugger as well as a .357 or .45.