When the barrel diameter is given in inches, the abbreviation "cal" is used in place of "inches."

Thus, conversion from "pounds" to an actual barrel diameter requires consulting a historical reference.

Particular care should be taken to determine the actual barrel diameter of such guns before firing them.

There are three standard barrel diameters for telescopes.

The force is proportional to the square of the barrel diameter while sealing needs are proportional to the perimeter by the same pressure.

By effectively putting the barrel on the inside of the weapon, the barrel diameter was no longer a limitation on the warhead size.

A Sub-caliber round is a round the diameter of which is inferior to the barrel diameter.

This indicates that the barrel diameter is 7.62 mm land to land, loaded in a case 51 mm long.

I pulled a few boulders out of the stack, exposing a dull green barrel the diameter of a drainpipe.

Typically, interior barrel diameter and the associated projectile size is a means to identify gun variations.