I have the 226 in .22 as well, and have just been trying it out with various ammo and a notepad. To my pleasant surprise, it ate pretty much everything, unlike my Advantage Arms Glock .22 conversion kit, which just will not extract CCI Stingers for some reason and is a bit picky about some other brands too.
I have tried the 226 with Blazers, MiniMags, Stingers, and Remington Game Load Golden Bullets. All shot almost perfectly, with only a couple of misfeeds from the MiniMags and Stingers. All in all I'm very pleased with the gun.
I'm probably going to get an upgrade kit, but since I already have a 226 in 9mm I'm not in a great hurry.