tapered-bore

tapered-bore

[′tā·pərd ′bȯr]
(ordnance)
Referring to a gun with a tapered bore; the bore may be tapered throughout its length or only in the muzzle section.
Pertaining to the ammunition for such a gun.
References in periodicals archive ?
Some of the better known experiments included the German Gerlich gun using a flanged bullet that gradually collapsed as it progressed down a tapered-bore barrel.
with a smooth-, threaded-, or tapered-bore for tightly joining flanges, the collar is available in steel, stainless steel, and aluminum.