A wood or metal rod used to force the wad and bullet down the
barrel of a muzzle-loading firearm.
Rate of Twist
The distance required for the rifling to complete one revolution. For example 1 turn in 12 inches.
Receiver
The basic unit of a
firearm that houses the firing and breech mechanisms and to which the
barrel and stock are attached. Also called
frame.
Receiver Ring
The part of the receiver that is threaded in order for the barrel to be attached to it.
Recoil
The rearward or opposite force or movement of a firearm caused by and equal to the force the firing or moving the projectile forward. Commonly called
kick and measured in foot pounds.
Recoil
Shield
On a revolver, the recoil shield is the metal extensions on the firearm's frame that cover the exposed back of the
cylinder on either side of the gun. It is designed to prevent fired or unfired cartridges from sliding out of the cylinder and to protect the exposed primers of cartridges in the chambers on either side.
A cartridge that has been reassembled with a new
primer, powder, and projectile.
Revolver
A firearm with a cylinder containing several chambers. The cylinder rotates around an axis allowing each
cartridge to be fired by the same firing mechanism.
Revolver Action
Usually found on a
handgun, were a steel cylinder containing several chambers rotates around an axis to allow the cartridges within to be discharged by a single firing mechanism.
Rib
A raised surface, either solid or ventilated, running along the top of a barrel and used as a sighting plane.
Ricochet
The deflection of a projectile after impact.
Rifling
Helical or spiral grooves cut into the inside of the
barrel surface to cause the bullet to spin in a rotary or spiraling motion causing the projectile to travel with greater stability. The cut-away portions of the rifling are called
grooves while the uncut portions are called
lands.
Rimfire Cartridge
A flange-headed cartridge containing the priming mixture inside the rim cavity.
Rimless
Cartridge Case
A
centerfire cartridge case with the case head of the same diameter as the body.
Rimmed
Cartridge Case
A cartridge case with a base or head larger in diameter than the body of the case.
Rolling Block Action
A single-shot action where the breechblock and
hammer are swung rearward, away from the
barrel breech to load or unload the firearm. When closed, the
breechblock locks the
cartridge in place ready to be fired.
Rotary
Magazine
The cartridges are arranged about a central rotating spindle or carrier.
Dundee
Sportsman's Club, Michigan Best Sportsman's Club
