An adjustable device attached to the muzzle of a shotgun in order to control the shot patterns.
Letter: V
VARMINT RIFLE
A sporting rifle with a heavy barrel, designed for long range small game hunting, firing high velocity, flat trajectory projectiles.
VELOCITY
The speed of a projectile at a given point along its trajectory.
VENTILATED CHOKE
A shotgun choke which is perforated for the release of propellant gases.
VENTILATED RIB
A raised sighting surface which is separated from the barrel by means of posts that allow air to circulate around it. Its purpose is to minimize heat waves in the line of sight. Also called Bridge Rib.
VERNIER SIGHT
A long-range sight with a mechanism for adjusting windage and/or elevation settings as read on a short scale in conjunction with graduations on a longer, linearly calibrated, scale.
VERTICAL DISPERSION
The greatest vertical distance between any two bullet holes on a target, normally measured center-to-center.