Letter: C

Lead Shot containing more than 0.5% alloying metal to increase its hardness. Also called Hard Shot.

An interior constriction at or near the muzzle end of a shotgun barrel for the purpose of controlling shot dispersion.

While no choke marking standard exists, typical choke markings are (in order from greatest to least constriction):
Full Choke = F, Full, * or I
Improved-Modified = IM, Imp. Mod., ** or II
Modified = M, Mod, *** or III
Improved Cylinder = IC, Imp. Cyl., **** or IIII
Skeet = SK, Skeet
Skeet USA = SK USA
Cylinder = CL, Cyl.
Some firearm manufacturers in the Europe also use the United States system.

A replaceable insert in the muzzle of a shotgun barrel to provide the desired amount of choke.

A type of lump which is integral with the barrel. See Lump.

An instrument designed to measure elapsed time. When correlated with distance it is used to determine projectile velocity.

A circular, domed, frangible disc used as an aerial target for shotgun shooting games. Originally formed out of clay, modern “clay” targets are generally made from a formulation of pitch and limestone. Dimensions and weights are regulated by skeet and trap shooter’s associations. Also called Clay Bird or Clay Pigeon.

Lead bullet, having a thin coating of another material such as brass, copper, nylon, etc.

To place the hammer, firing-pin or striker in position for firing.

Any device to indicate that a firearm hammer or striker is cocked.