Tracers are primarly rifle rounds, and easy to find almost anywere, But you can beleave somewere out there somebody has them, prepar to pay a outragious price for them, I know I have seen 22 cal tracers, even shotgun and slug tracers, there is no doubt in my mind they are available.
Yup. As rickrem700 stated they have the .22's out there. There are also 9mm's you can get. They are the only one's I have noticed. I guess you should have a good reason? aplication? I don't know, to shoot them cause as they say..Don't shoot up in the air, they come down. Also the price is a factor. I see them at gunshows where they have every make of bullet you could want,almost.