Letter: R

A spring used to store some recoil energy and subsequently close the action and feed the next round in semiautomatic firearms. In other designs, a recoil spring may serve to absorb recoil energy or perform other functions.

A less than nominal powder charge.

Ammunition used to qualify and/or calibrate velocity and pressure measuring systems.

The adjusting of the relationship of the axes of multi-barreled firearms so as to make the points of impact coincide at a given distance.

An unconventional mechanism generally found only in some trap shotguns in which the firearm is fired by the release of, rather than the pull of, the trigger.

The carving of raised scenes that produces three-dimensional figures.

The process of reassembling a fired cartridge case with a new primer, propellant and bullet or wads and shot. Also called Handloading when performed manually. See Handloading.

Cartridge cases (new or used), primers, propellant powder, bullets, or shot and wads, used in handloading ammunition.

A description of recommended relationships of reloading components.

Propellant made available to consumers for handloading ammunition. Also called Canister Powders.