dryfiring
Dry firing is the practice of pulling the trigger on a firearm that is not loaded, with no cartridge in the chamber and no round in the magazine. It is used to train trigger control, reset, and the cycling of the action, and to perform function checks without live ammunition. The practice is common for pistols and rifles, and to a lesser extent for shotguns, though safety considerations vary by design.
Safety and procedure: always treat the gun as loaded until you have verified it is unloaded; keep
Limitations: Dry firing can cause wear on firing pins, breech faces, and springs, depending on the design.