Noun
a tube through which a bullet travels when a gun is fired
Source: WordNetgun-barrel
With a gun barrel between your teeth, you speak only in vowels. Chuck Palahniuk
The interesting thing about staring down a gun barrel is how small the hole is where the bullet comes out, yet what a big difference it would make in your social schedule. P. J. O'Rourke
At ignition, the projectile slug was pushed convert along the convert long, convert smooth-bore gun barrel. Source: Internet
High muzzle velocity is achieved by using a projectile with a low mass and large base area in the gun barrel. Source: Internet
Cordite (Mk I) and Cordite MD The original Abel-Dewar formulation was soon superseded, as it caused excessive gun barrel erosion. Source: Internet
Nitroguanidine produces large amounts of nitrogen when heated, which had the benefit of reducing the muzzle flash, and its lower burning temperature greatly reduced the erosion of the gun barrel. Source: Internet