I've got the bolt action model. Friend had the semi version. Bolt is a touch more accurate. I've had mine since I turned 18, been through 3 car wrecks many squirrel and rabbit excursions, countless thousands of rounds. Still a tack driver as far as I can see. Ammo hasn't made a matter.
IIRC my friend while he had his, would shoot any ammo with no issues. For the price it's a great deal.
And I saw heaven opened, and behold a white horse; and he that sat upon him was called Faithful and True, and in righteousness he doth judge and make war.