Confirming that a round has been stripped from the magazine and has been chambered.
Single Action Only
Single Action Shooting Society
Short Barrel Rifle
Short Barrel Shotgun
Special Purpose Rifle
An under powered round that had only enough energy to lodge the bullet part way down the barrel.
This is when a spent piece of brass is trapped between either the bolt on a rifle, or slide on a semi-automatic pistol, and the frame. The brass does not allow the bolt or slide to go into battery to fire the next round.
Semi Wad Cutter
United States Practical Shooting Association
The movement to a bullet down range caused by crosswinds.