Headstamp: DA 57 CDN1 9MM

slushee

slushee

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So I know DA means Dominion Arsonel out of Quebec

I also know 57 means 1957 production

I also know that CDN1 was a Canadian Military 'Canada Mark 1' designation with only limited use between 1955-1957.

What I'm curious about though, is I have about 20 of these. The primers and bullets were held in place by some 'black goop' that seems to have been applied wet adn then hardened after the primers and bullets were seated like some sort of black epoxy. Does anyone know what this stuff is?

Also, I pulled the bullets, dumped the powder and deprimed them. I am saving the bullets as they appear to be in good shape. Does anyone know what they are/who manufactured them? I have yet to weigh them to know how many grains they are, but they are FMJ/RN with an exposed, concave base.

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Are all military rounds (both past and present) sealed somehow?

Are there any civilian alternatives that can be used to seal bullets in such a fashion? Would it have any effect on accuracy/pressure build up?
 
Do you really need to seal your ammo like if you will roll in mud with it?
Do you jump out of a plane and land in water with ammo? if no, then, you don't really need to seal it. Most commercial ammo will almost live forever without being sealed. Some commercial manufacturers still seal their primer pockets but it's mainly because it's made on the same lines as they manufacture military ammo.

Military still seal their ammo and they also crimp their primers and their bullets.

As for the case mouth seal it will burn when the powder will be ignited.

The DA bullets were made by themselves. So does / did IVI and most Canadian manufacturers.
 
slushee said:
So I know DA means Dominion Arsonel out of Quebec

I also know 57 means 1957 production

snip...Also, I pulled the bullets, dumped the powder and deprimed them. I am saving the bullets as they appear to be in good shape. Does anyone know what they are/who manufactured them? I have yet to weigh them to know how many grains they are, but they are FMJ/RN with an exposed, concave base.

snip...
Click to expand...

Don't you hate it when you answer your own question?

Nominally 115gr Mfg by Dominion Arsenals...
 
LOL I was just adding some additional information I already knew, but I suppose the thread title should have been more appropriate :) .. the real questions were the black goop and the manufacture and weight of the bullets .. both of which were happily answered!

I have absolutely no intention of sealing my own ammo, but I have pulled some IVI nato ammo and have not seen any kind of sealant before. Strange that other military ammo have sealant but that I've not run across it before. I have dealt with many a case having its primer crimped (loosing a few to punched primers by the decapper pin) and be sure to chamfer them out before I re-prime.

Thanks for all the info btw! I've successfully cleaned the brass and bullets, and will be sure to weight them however they do look the profile (short) of being in the 115 grain range.
 
They sometimes use other seal type such as varnish. Sometimes the case neck crimp itself acts as a seal.
 
I bought about 400 of the exact same brass. The bullets had been pulled and powder dumped before I bought them. Primers still in. There is no sign of any sealant on my cases.
 
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