I know of CZ rifles with more than 7000-10000 shots, guys doing gopher's shooting, out here in western Canada, 500-1000 shots in a day no problem, although most guys run several rifles at a time, ie .22 and a centerfire. likely depends how hot, you run them, its only 12gr of powder at a time, so takes a lot to get barrel hot.
I see CZ USA list barrels, weather we can import one, may be another story.
Hornardy, American eagle (federal), and Winchester for ammo,
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