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Glossary Results
J - 9 matching terms
JACKET
The envelope enclosing the lead core of a compound bullet.
JAM
A malfunction of a firearm that prevents the action from operating; may be caused by faulty parts, ammunition, improper maintenance or improper use of the firearm.
JANKA HARDNESS, JANKA TEST
A system of rating the hardness of wood by use of a 0.444 inch diameter ball; measured in pounds required to force one half the diameter of the ball into the wood.
JEWELING
See Engine Turning.
JIG
A precise mechanical locating device used in production of component parts and/or assembly of firearms.
JOINT
A place where two or more parts come together so as to permit motion. The term is sometimes used in reference to the pivot point of a hinged action.
JOINT PIN
See Pin, Hinge.
JUG CHOKE
See Choke, Jug.
JUMP
The upward and rearward recoiling movement of a firearm when it is fired. Also, see Bullet Jump, Recoil.
Abbreviations:
A-L | M-Z
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