What are you going to do with bullets? Your pistol is chambered for the .22 Long Rifle cartridge.
Bullets are to cartridges as flour is to bread as cement is to concrete, etc. Multiple cartridges are known as ammunition.
If you are old enough to use a keyboard, you are old enough to learn the language.
I got a brick of 500 of those things that, when you put in the magazine of 10, and you pull the trigger, they go boooom . . . how's that?
Actually, you're mistaken about .22 Long Rifle cartridge . . . I use the small things that go boooom . . . maybe an inch long