Let's do cannons #3

This dude is a (relatively) recent purchase - it's a signed and numbered brass naval cannon from Cannon-Mania. This was their millennium offer (for the year 2000 - not, technically, the millennium). It's a nice desk piece in .30 caliber - fully functional but more of a collector's piece.

By the way - .30 caliber is a common military caliber - .308, 30-06, etc. The best field-expedient measure to approximate a .30 caliber hole (in, say, a gun barrel or a roadside sign) is the diameter of a standard U.S. cigarette. If a cigarette just fits in a bullet hole, you've got a .30 caliber hole. Here's hoping this information is useful to you someday...