CCI makes and sells them for many calibers. They also used to make them in .45acp...unsure if they still do.
We raised our kids on a thousand acres and when I left the house in the morning I had a Ruger Blackhawk with two snake loads and four 125 gr Reminton .357s on my hip. I know we weren't supposed to kill snakes, but it was easier to kill them than to have kids and dogs snake-bit frequently. The ones that insisted on getting close to the house and barns were either eastern diamondbacks or timber rattlers or copperheads.
'At the end of the fight is a tombstone white with the name of the late deceased...And the epitaph drear, "a fool lies here who tried to hustle the east."'