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Looking for info on a 27mm

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US-Subs

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I've got a guy asking a question about a fired 27mm projo marked 27G DM21. Below the 27G markings is DM1086. Anyone recognize this (DM1086) marking or know what it is for? It doesn't show up in anything I've got. The round is unfuzed, so it's not known if it could be for the fuze or not. Any info or a data sheet would be appreciated.


2_imagejpeg_2.jpg
 
I'm thinking 27mm Mauser gun for the Tornado. There is a German Tornado wing in New Mexico.
 
Hey Guys,

Question... could it be just a lot number?!?...

Anyhow, I don't know if any of assistance but I did find some info on Jane's. Here's an interesting chart found under "Cannon - 20 to 30 mm cannon, Switzerland", "27 145 B ammunition",

Cheers.

Luc.

g0038285.jpg
 
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The first round on the chart is a DM21 Air-to-Air combat HE. I'm thinking DM1086 could be a lot number also, or loading number.
 
DM is normally a model number for Germany, the four digit seemed reminicent of the WWII fuze numbers for 20mm and such - while stamped seems unusual for a fuze marking, the DM mark did not seem typical for a German lot number. Of course I cannot find the number listed as a fuze either. Maybe projectile number vs cartridge number?
 
Hello again,

Here's more info found on Jane's earlier. More specific to DM-21. The document is too long to post entirely.

"There arethree types of Mauser 27 mm full-calibre High-Explosive (HE) ammunition: HE DM 21, HE DM31 and the self-destruct HE-SD DM 11. They are all designed for operationsagainst aircraft in air-to-air combat. All have an electro-magnetic nose fuzewhich functions even at extremely flat impact angles. A delayed action in thefuze ensures good fragmentation after the projectile has entered the target."

And here's what I found on Ordata.

http://ordatamines.maic.jmu.edu/displaydata.aspx?OrDataId=5250

Hope that help.

Regards.

Luc.
 
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Just curious. checked the Ordata link and it advised, do not neuralize, disarm or demolish. What do you do to get rid of it then? I realise that there are things you wish you did not have to deal with, but this dosn't seem to give you many options.
 
Hi Jeff, howe is it.
DM 1089 is the model number of the empty projectile.
Erik
 

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Thanks Erik, that's what I needed. JO
 
To add to this … does anyone have a DM31 projectile they can take pictures of? I am looking for just a picture of the projectile out of the cartridge.

Joe
 
hello
nice view of these HE projectile
but with the red band could be an HEI load ?
and the two unscewed fuzes look little different (on the internal "hole") one had screw 'lines" and look little larger than the other
 
ammogun said:
hello
nice view of these HE projectile
but with the red band could be an HEI load ?
and the two unscewed fuzes look little different (on the internal "hole") one had screw 'lines" and look little larger than the other
Click to expand...
I’m yet to figure out why they have the red band to be completely honest as there is no HEI according to the lists I’ve seen! , it is oddly quite difficult to research! I assume this is down to given the restricted nature of the information ,

Fuse wise I can’t help much with at the moment but the dummy nose plug ( solid steel ) on the second projectile in the photo is DM1036 nose plug , hopefully soon I can find the background info and DM number for the actual fuse but that should explain the difference in appearance for you

**Edit**

The fuse could be a DM401 fuse ( not confirmed )
 
27MMNUTTER42 said:
I’m yet to figure out why they have the red band to be completely honest as there is no HEI according to the lists I’ve seen! , it is oddly quite difficult to research! I assume this is down to given the restricted nature of the information ,

Fuse wise I can’t help much with at the moment but the dummy nose plug ( solid steel ) on the second projectile in the photo is DM1036 nose plug , hopefully soon I can find the background info and DM number for the actual fuse but that should explain the difference in appearance for you

**Edit**

The fuse could be a DM401 fuse ( not confirmed )
Click to expand...
From the markings I presume both are UK produced projectiles, such as Royal Ordnance/BAE Systems? This as I can see (presumed roll) stamps on the body of the projectile, which start with CY and RG. I can't see the fuze (it's not 'fuse' by the way) markings, or the markings on the cases, so can't make any guesses as to what their country of manufacture was.

As to the filling, if they are UK-produced, then they were likely filled with Hexa; a mix of RDX, powdered aluminium, and commonly a small amount of a phegmatizer (wax), and/or graphite. As Hexal is a high explosive incendiary (HEI) type of filling, this would be a good reason why a red band is present.

That being said, even though filled with Hexal, the Royal Ordnance/BAE Systems brochure I have from the late 1990s lists the rounds as HE. A screen capture of the brochure page is below.

DM31.png

The nose fuze mentioned in the brochure is the DM401 electromechanical delayed-action model.
 
Eggburt1969 said:
From the markings I presume both are UK produced projectiles, such as Royal Ordnance/BAE Systems? This as I can see (presumed roll) stamps on the body of the projectile, which start with CY and RG. I can't see the fuze (it's not 'fuse' by the way) markings, or the markings on the cases, so can't make any guesses as to what their country of manufacture was.

As to the filling, if they are UK-produced, then they were likely filled with Hexa; a mix of RDX, powdered aluminium, and commonly a small amount of a phegmatizer (wax), and/or graphite. As Hexal is a high explosive incendiary (HEI) type of filling, this would be a good reason why a red band is present.

That being said, even though filled with Hexal, the Royal Ordnance/BAE Systems brochure I have from the late 1990s lists the rounds as HE. A screen capture of the brochure page is below.

View attachment 198768

The nose fuze mentioned in the brochure is the DM401 electromechanical delayed-action model.
Click to expand...
That should have been 'Hexal', not 'Hexa', but for some reason I cut off the 'l' at the end some point?
 
Eggburt1969 said:
From the markings I presume both are UK produced projectiles, such as Royal Ordnance/BAE Systems? This as I can see (presumed roll) stamps on the body of the projectile, which start with CY and RG. I can't see the fuze (it's not 'fuse' by the way) markings, or the markings on the cases, so can't make any guesses as to what their country of manufacture was.

As to the filling, if they are UK-produced, then they were likely filled with Hexa; a mix of RDX, powdered aluminium, and commonly a small amount of a phegmatizer (wax), and/or graphite. As Hexal is a high explosive incendiary (HEI) type of filling, this would be a good reason why a red band is present.

That being said, even though filled with Hexal, the Royal Ordnance/BAE Systems brochure I have from the late 1990s lists the rounds as HE. A screen capture of the brochure page is below.

View attachment 198768

The nose fuze mentioned in the brochure is the DM401 electromechanical delayed-action model.
Click to expand...
No markings on the “ Fuze “ , these came loose with no cases so the cases are just some I already had

Cheers for the info
 
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