I dry fire my .22 rimfire target rifles all the time. I'm on a smallbore team, and my coach showed me how to dry fire without hurting the gun.
This works on a bolt-action gun only. First, open the action; visually and physically clear the chamber. Then close the action and close the bolt halfway down, so that the bolt handle is around the 3 to 4 o'clock position (if it's a right-handed gun. For lefties, it needs to be at the 9 to 8 o'clock.) Just repeat as needed.
Works for me, and I have not seen any visual damage to the barrel. But to be absolutely sure, read the instruction manual. That should tell you if it's okay or not.
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