gain twist


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gain twist

[′gān ‚twist]
(ordnance)
A type of rifling in which the twist is more rapid at the muzzle than at the breech, thus gradually increasing the rotation of the projectile.
References in periodicals archive ?
A gain twist barrel engraves and spins the bullet up gradually.
5mm military rifle ever adopted and featured a unique, gain twist barrel.
One of the intriguing aspects of the trials was that the Commission had decided to use a gain twist barrel to over-come the effects of throat erosion.