3" 50 Caliber Dummy Round

[BDH]

The size or diameter is 3 inches. A 3" 50 caliber round is shot from a bbl 50 times the diameter of the round (50 calibers) or 150 inches/12 = 12 1/2 foot barrel. The round is 35 inches in length.

Hope this clears up any question on size. I found a British ordnance site with very helpful people who have helped out.

Bruce

Information

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[aqbill]

Notwithstanding its size, it's a really outstanding bit of history and conversation piece.

[Brown Dog]

A 3" 50 caliber round is shot from a bbl 50 times the diameter of the round (50 calibers) or 150 inches/12 = 12 1/2 foot barrel.

Never heard of an artillery round being described in calibre length before. It can be fired from any length barrel with the right chamber and bore.
I've only ever come across calibre length being used to describe the barrel, not the round. For example the AS90 has a 39 calibre barrel; but it'll fire any NATO 155mm shell.
Did your sources say why the round itself has a calibre length notation?

PS: I think value will be less than you maybe hoping- drill rounds are abundant. £100ish. Probably less.

[BDH]

grandson has been here.

Try this link Brown Dog.

http://en.wikipedia.org/wiki/3%22/50_caliber_gun

and you'll get an explanation.

You mentioned 100 pounds, I don't think it will go quite that high so I'll probably list it at around $110 includind shipping, which is about $36.