I've never seen where caliber/cartridge had anything at all to do with reliability. Whatever "gotta be reliable" pistol I use will not be one that has had thousands of rounds through it without a rebuild, whether revolver or semi-auto.
I've never had a failure with any handgun I've ever used, other than a couple that some self-styled "gunsmith" had screwed up. I'm not counting goofs in reloading plinking ammo--but that was my fault, not the gun's.
FWIW, Art