Definitions for "Boat Tail"
( BT ) Bullet of tapered base or truncated conical base design, which raises the ballistic coefficient factor by reducing the aerodynamic drag, providing greater stability at subsonic velocities. Drag partly comes from the effects of cavitation (turbulence) and the progressive reduction of the diameter toward the rear of the bullet allows the air to fill in the void. Originally designed for extreme range machine guns barrages, boat tails offer some ballistic advantage on the target range at 800-1000m, as most match-type bullets have boattails to help flatten trajectory. They have little practical use at shorter ( LE/hunting ) distances, as few modern cartridges drop below the speed of sound at these shorter distances.
Name given to a bullet type with tapered base. Also taper heel
The pointed and smoothed out tip on a bullet to increased proficiency.