Help with ID of 20mm Round
- Thread starter az_imuth
- Start date
It appears to be a 20x110mm functioning dummy for one of several versions of 20mm cannon the US Navy used up through the 1970s; live rounds were produced in both percussion- and electrically-primed versions, but these all have a definite primer in the middle of the case-head, so yours is a dummy round, but with a filler so that it simulates the weight of a live round (something they used to test the feed systems on occasion); most dummy rounds in this calibre would look like the ones at http://www.gunbroker.com/auction/ViewItem.aspx?Item=147597018
Phalanx CIWS
Inert, or "dummy" rounds are typically dual tone (bronze bullet/metallic case) but I have also seen the entire case/projectile in the same silver/metallic or bronze coloration.
The 20mm is electrically fired and has a electrical primer in the base of the cartridge.
Based upon what you have there, the case appears to be a dummy without the electrical primer installed.
It also looks like someone may have painted the projectile red to resemble a Phalanx round (see link below). Go to "medium caliber ammunition".
http://www.gd-ots.com/#key=2HR09
Inert, or "dummy" rounds are typically dual tone (bronze bullet/metallic case) but I have also seen the entire case/projectile in the same silver/metallic or bronze coloration.
The 20mm is electrically fired and has a electrical primer in the base of the cartridge.
Based upon what you have there, the case appears to be a dummy without the electrical primer installed.
It also looks like someone may have painted the projectile red to resemble a Phalanx round (see link below). Go to "medium caliber ammunition".
http://www.gd-ots.com/#key=2HR09
bamaranger
New member
why not blue
I thought all "dummy" inert ammo/projectiles were blue?????
I thought all "dummy" inert ammo/projectiles were blue?????
Not all nations use or have used the blue = inert color code. Red could mean the same thing or something different depending on where and when this was made.
The MK coding is Britishy / Naval. It could be English or from a former colony that still uses Britishy terms for ordinance. It may have come from HMC (Heavy Mechanical Complex), Pakistan, although I have not been able to find anything about 20mm ammo from that facility.
It could be for the Mk 11 HIPEG aircraft gun, although I have not found much info on that system. I found some passing references, so it existed, but other than that I dunno.
Here's a note of an Argentine 20mm round from 1974 with the similar markings, but there is no photo:
http://www.municion.org/20mm/20x102.htm
It may be an earlier 20x102mm round instead of 20x110mm.
Kind of sparse info, but one of those factoids may be the search-term you need to dig up more.
The MK coding is Britishy / Naval. It could be English or from a former colony that still uses Britishy terms for ordinance. It may have come from HMC (Heavy Mechanical Complex), Pakistan, although I have not been able to find anything about 20mm ammo from that facility.
It could be for the Mk 11 HIPEG aircraft gun, although I have not found much info on that system. I found some passing references, so it existed, but other than that I dunno.
Here's a note of an Argentine 20mm round from 1974 with the similar markings, but there is no photo:
http://www.municion.org/20mm/20x102.htm
It may be an earlier 20x102mm round instead of 20x110mm.
Kind of sparse info, but one of those factoids may be the search-term you need to dig up more.
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