What will happen to a pellet gun if you dryfire it?

Answer 1

Most spring Pellet guns should not be dry-fired. When you shoot a spring powered air gun or rifle, the spring compresses the air in the airtube and the compressed air forces the pellet out of the barrel. The compressed air also slows down the spring piston due to the air being compressed. In this way the piston doesn't slam against the end of the chamber. When you dry-fire the rifle without a pellet in the breech the piston has no resistance in the chamber and slams against the end of the airtube. Eventually it will ruin the air tube and the rifle or gun.

If you dry-fire a C02 gun nothing will happen no damage will occur.