Band of Marks on 9mm Case

[okorpheus]

I've been finding some 9mm cases that have a band of short marks all the way around them - looks like some kind of toolmark or something. What is this mark and are the cases OK to load?

 

[dennishoddy]

Same head stamp?

 

[okorpheus]

No, 3 F C and 1 Aguila in the 4 that I have out now.

 

[Corey]

Some of my hornady defense ammo has a similar mark
if they are short vertical dashes closely spaced all around the case
Hard to see ur pic clearly on my phone

 

[okorpheus]

Some of my hornady defense ammo has a similar mark
if they are short vertical dashes closely spaced all around the case
Hard to see ur pic clearly on my phone

Yes, that's exactly it.

 

[Wall]

they look like some kind of roller mark

 

[dennishoddy]

I have some like that in my brass stash. There won't be any issue with reloading or shooting them.
I came by some old russian .45 ACP ammo awhile back. Its steel case with the same markings. They were real old, so I just pulled the bullets, and used them for practice rounds.
I'll dig through my stuff tonight,and see if the head stamps are the same as yours.

 

[ryanncass]

I reload the 9mm this the marks and never have had an issue. Just reload them and shoot them

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[dennishoddy]

Quick look in my brass has this on .38 spc. Win brass, 9mm federal brass, and 45ACP from some European brass that I don't recognize.
View attachment 4235

 

[okorpheus]

I asked on enos as well and was told its something some manufacturers do, most often with duty ammo, to prevent setback.


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[dennishoddy]

Now we know.

 

[echotango]

Have always loaded them with no issues.

 

[noylj]

It's a cannelure. Perfectly normal.
Usually used to help retain bullet from being set back.
Also, some factories use them for identification.
If you look at cases, you'll find some with two or three cannelures.
Means NOTHING to a reloader, as it was expanded out with the rest of the case.
Never had any case failures at the cannelure.

 

[mike cyrwus]

I cull out the aguila brass like this, it screws with my bullet seating

 

[Scott Hearn]

I asked on enos as well and was told its something some manufacturers do, most often with duty ammo, to prevent setback.


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That's exactly what it is. As long as you aren't seating past that point it's perfectly fine. Lots of revolver calibers are like that, which I don't really understand, revos pull bullets out in firing.

Like noylj said, it's called a cannelure. Some bullets have them too to crimp the case into.