barrel whip

barrel whip

[′bar·əl ‚wip]
(ordnance)
The movement of a gun barrel in a plane normal to the longitudinal axis of the gun bore, as the gun operates through a complete firing cycle.
References in periodicals archive ?
Nodes of vibration and barrel whip are all very interesting subjects.
Unfortunately, we can't totally prevent barrel whip.
The barrel whips up and down like a jiggled fishing rod, and those are just the vibrations we can see, since it also expands slightly as the bullet passes through the bore, like a snake swallowing a mouse, and even twists due to the torque of the rifling.
Ported tubes allow gases to leave the muzzle evenly, reducing barrel whip.
Doing so results in the total elimination of barrel whip and in significantly smaller barrel oscillations when the gun is fired.
22 LR would generate all that much barrel whip to profit from the thicker walls of the DPMS receiver but since I switched from standard upper receivers to the thicker Lo-Pro I have noticed .
Although I have not set up any studies to quantify this, my gut feeling is that guns that exhibit more barrel whip probably profit more by proper fitting of the barrel extension than lighter recoiling guns.