Interesting Residue In 9mm Case

[peeplwtchr]

Hi All-

I was sorting the brass I shot from range scraps, and noticed that there is a wierd blood colored ring of residue inside the case, where the bottom of the bullet sat. I don't know what brand it is, never seen it. Anyone know why that ring is there? Never seen it in anything I've bought. Just curious.

Thanks

 

[usnr2003]

The red around the primer is sealant. Probably the same for the bullet.

 

[tightgroup tiger]

The stuff in the mouth of the case is bullet sealant. It's to waterproof the round to the best of the manufacturers ability. I find a lot of them.
The stuff comes off in my ultrasonic and probably also does in the wet tumbling process as well.

 

[peeplwtchr]

That was my first assumption, but then I wondered how they got it in there, assumably before they charged it? Wonder what brand it is too, military something?

 

[tightgroup tiger]

The picture looks like a NATO case but I made that assumption before and was wrong. If the circle by itself has a cross in it then it's a military round and that would explain it.

You can see a line around the bottom of where the bullet base was seated to.

I wonder if it's water soluble because I never see this stuff after the cases come out of my ultrasonic.

 

[fxvr5]

Tar is often used as a bullet sealant, too.

 

[peeplwtchr]

The picture looks like a NATO case but I made that assumption before and was wrong. If the circle by itself has a cross in it then it's a military round and that would explain it.

Yeah, the headstamps are crappy, first thing I looked for, but the indentation on these is not like any NATO symbol I've ever seen. I am getting the feeling this stuff may be high volume low qualirty russian or asian military surplus, which is logical, due to the ammo shortage.

 

[Rod47]

Winchester Military Ammunition. NATO contract

 

[tightgroup tiger]

I am getting the feeling this stuff may be high volume low qualirty russian or asian military surplus, which is logical, due to the ammo shortage.

It may be. There are so many brands being imported now, I can't keep up with the head stamps.

 

[peeplwtchr]

Ahhh, thanks. I stay away from winchester, so it makes sense I've never seen it.

 

[Ruger 15151]

You can identify that its NATO brass by the small round stamp that looks like a cricle with crossed lines in the center.

Winchester pistol brass is great brass. I would just stay away from NATO brass of any kind unless you want to swage the crimp out of the primer pockets.

9mm brass is so readily available its not worth the effort.

 

[tightgroup tiger]

The only good thing about brass with crimped primer pockets is it is truly once fired. I sort them out of my range brass until I have enough of them, then I put my countersink in my drill press and have at them to chamfer the primer pockets.
I usually load them all at one time, and keep them together as a group. I use them for when I don't think I'll be able to pick up my brass.
If I had enough of them I would do things differently and keep them instead of leaving them lay.
There is nothing wrong with them and they are a little heavier brass than, say, cheap target brass is.

 

[peeplwtchr]

You can identify that its NATO brass by the small round stamp that looks like a cricle with crossed lines in the center.

Winchester pistol brass is great brass. I would just stay away from NATO brass of any kind unless you want to swage the crimp out of the primer pockets.

9mm brass is so readily available its not worth the effort.

Whew! This made me run down and check my 1000s of remington military(?) training and federal cases, they're not crimped. They are plans B and C for when my Geco brass gets old.

 

[Walkalong]

The stuff in the mouth of the case is bullet sealant.

And the red stuff around the primer is also sealant.

 

[Average Joe]

sealer, as stated above ^

 

[Project355]

Tar is often used as a bullet sealant, too.

Close, but not tar. Bitumen. Easily cornfuzed. Used on military bullets. Primers were sealed with lacquer.

 

[Spare Parts]

That was my first assumption, but then I wondered how they got it in there, assumably before they charged it? Wonder what brand it is too, military something?

The sealant is "wicked-in" by surface tension after the bullet is seated. If Win-MS-Gubmint (WMA) put a little extra sealant on that round, it collects on the projectile at both ends of the neck. You won't see the sealant that was sent down range.

Just tumble it. Also, de-crimp the primer pocket. It's mil-spec brass, good enough for our troops overseas.

 

[peeplwtchr]

The sealant is "wicked-in" by surface tension after the bullet is seated. If Win-MS-Gubmint (WMA) put a little extra sealant on that round, it collects on the projectile at both ends of the neck. You won't see the sealant that was sent down range.

Just tumble it. Also, de-crimp the primer pocket. It's mil-spec brass, good enough for our troops overseas.

Cool info thanks.

 

[res45]

https://www.m4carbine.net/showthread.php?169345-9mm-wma-headstamp

 

[peeplwtchr]

https://www.m4carbine.net/showthread.php?169345-9mm-wma-headstamp

Great info., thanks!

 

[Rule3]

If you plan on using them, Naphtha, Xylene will clean the sealant right off.
But to clean and decrimp them, is it worth it??

 

[peeplwtchr]

Nah. I only have 30 of them, and 1000s of other headstamps like Geco, Rem, Fed., Win. etc..