My 15-22s are the least picky 22 semis I own. They'll shoot anything and everything I've thrown at them. Well, everything except most Winchester. I think their quality control is suspect, so I don't buy Winchester ammo unless it's the only thing available.

Blazer, mini mag, CCI standard vel., Remington golden bullet, Aguila in several varieties, Fiocchi, and probably several others I've forgotten all work well in mine.

I don't buy Federal (including American Eagle) any more, but mostly because it doesn't work well in my other 22s, The 15-22 will fire it, but some of my others won't.

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Or something like that . . .