The distance, measured in inches, that a projectile travels above the line of sight at a specific point in the trajectory that is half the distance between the firearm and a target.
Archives: Glossary
Glossary custom post type
MIL
The angle subtended by one unit at 1000 units.
MINIE BALL
A conical nosed lead bullet, slightly under bore diameter, incorporating a hollow base, designed to expand into the rifled bore upon firing for gas sealing purposes without the use of a patch.
MINUTE OF ANGLE (M.O.A.)
An angular measurement method used to describe accuracy capability. A minute of angle is one sixtieth of a degree, and subtends 1.047 inches at 100 yards, which for practical shooting purposes is considered to be one inch. A minute of angle group, therefore, equals one inch at 100 yards, two inches at 200 yards, etc.
LUMP
One of several projections located on the underside of the barrel or barrels on break action guns, which serves to secure the barrels to the action or receiver. See Barrel Lug.
LUP (LEAD UNITS OF PRESSURE)
(Obsolete) A pressure value determined by means of lead crusher cylinders.
MACHINE CHECKERING
A process of wood carving gun stocks by machine rather than by hand.
MACHINE GUN
A fully automatic firearm that loads and fires live cartridges and ejects the spent cartridges continuously when the fire mechanism is held until ammunition is exhausted, the firearm’s designed burst cycle is completed or the firing mechanism is released.
MACHINE REST
Mechanical apparatus used for holding a firearm in a precisely controlled, selected position for testing the accuracy of the ammunition or the firearm.
MAGAZINE
1. A building for the storage of either ammunition or its components. 2. A receptacle for a firearm that holds a plurality of cartridges or shells under spring pressure preparatory for feeding into the chamber. Magazines take many forms, such as box, drum, rotary, tubular, etc. and may be fixed or removable.