9mm small primer

John D · January 13, 2019, 05:48 PM

Loading a batch of 9mm today and I must have picked up a stray case. When I tried to seat the primer, I faced resistance (Dillon 550). I stopped and removed the case and found this unusual piece of brass. I don't recognize the head stamp (9 MM 41) and the primer hole is just way to small. Anyone ever run across this?

pete2 · January 13, 2019, 05:52 PM

I can't tell for sure but you may have punched the bottom of the primer out leaving a ring in the primer pocket. Primer may also have been crimped in, this appears to be a military case. Chunk it.

FITASC · January 13, 2019, 06:05 PM

Looks like it has a military crimp still there.

308Loader · January 13, 2019, 06:10 PM

+1 crimp, 9x19 NATO? Not 9mm luger. Look up the head stamp.

Nathan · January 13, 2019, 06:10 PM

Quote:

Looks like it has a military crimp still there.

Bingo. A twist or 2

locknloader · January 14, 2019, 08:03 AM

Not sure brand but a nato case for sure, toss it. I ocassionally run into these from range pickup brass.

BillM · January 14, 2019, 10:40 AM

It appears that the outer ring of the primer is still in the case? Not unusual in
old military crimp ammo. Toss it.

It appears to be a 9mm round made in 1941 by Defense Industries in Canada. WWII
ammo, not sure if the primers were corrosive or not.

One thing it is NOT is a piece of Nato brass. Nato didn't exist until 1949.

Jim Watson · January 14, 2019, 11:00 AM

Agree, looks like a "ringer" with the primer bonded to the pocket and the top punched out. Common enough that commercial reloaders have "ringer detectors" for their Camdexes.

I have a stock of once fired TZZ .45s that gives some ringers. I suspect because it was chemically cleaned and not rinsed well.

WWII Canadian 9mm was noncorrosive and good quality. I guess the large majority went to Sten guns, some to Inglis Brownings; but it sure shot well in a Luger.

mikld · January 14, 2019, 12:26 PM

I agree with the "ringer" diagnosis. The ring looks to big/thick to be a crimp. I've picked out a few from older military brass, but none from "modern" cases...

Average Joe · January 14, 2019, 09:28 PM

With 9mm cases being everywhere, I toss anything that looks like it might be a military case, why struggle ?

reddog81 · January 15, 2019, 10:27 AM

I always hand sort my 9mm cases. Too many potential problems otherwise - military cases, cases with an internal step, very similar in size to .380...

locknloader · January 15, 2019, 11:05 AM

@reddog81 - god i had 380 cases..... such a pain to get out of a batch of mostly 9mm!

**44 AMP** · January 15, 2019, 02:50 PM

get some needle nose pliers and get a grip on that "lip" and pry. It should be readily apparent if it is part of the case, or not.

Reloader270 · January 18, 2019, 08:55 AM

I had been reloading some 9mmP loads for my son in law with an older RCBS Carbide Set. I had about 10 cases with undersized flash holes. The older decapping pins does not have the head and therefore it got stuck in the case. Had to remove them one by one. Now I understand why most reloading companies had changed to the headed decapping pins.

January 13, 2019, 06:05 PM	#3
FITASC Senior Member Join Date: December 6, 2014 Posts: 6,452	Looks like it has a military crimp still there. __________________ "I believe that people have a right to decide their own destinies; people own themselves. I also believe that, in a democracy, government exists because (and only so long as) individual citizens give it a 'temporary license to exist'—in exchange for a promise that it will behave itself. In a democracy, you own the government—it doesn't own you."- Frank Zappa

January 13, 2019, 06:10 PM	#4
308Loader Senior Member Join Date: August 24, 2014 Location: Minnesota Posts: 639	+1 crimp, 9x19 NATO? Not 9mm luger. Look up the head stamp. __________________ Just a dude with stuff.

January 14, 2019, 12:26 PM	#9
mikld Senior Member Join Date: February 7, 2009 Location: Southern Oregon! Posts: 2,891	I agree with the "ringer" diagnosis. The ring looks to big/thick to be a crimp. I've picked out a few from older military brass, but none from "modern" cases... __________________ My Anchor is holding fast! I've learned how to stand on my own two knees...

January 15, 2019, 02:50 PM	#13
44 AMP Staff Join Date: March 11, 2006 Location: Upper US Posts: 28,906	get some needle nose pliers and get a grip on that "lip" and pry. It should be readily apparent if it is part of the case, or not. __________________ All else being equal (and it almost never is) bigger bullets tend to work better.

January 13, 2019, 05:52 PM	#2
pete2 Senior Member Join Date: May 15, 2012 Location: Texas Posts: 2,566	I can't tell for sure but you may have punched the bottom of the primer out leaving a ring in the primer pocket. Primer may also have been crimped in, this appears to be a military case. Chunk it.

January 14, 2019, 08:03 AM	#6
locknloader Senior Member Join Date: August 28, 2017 Posts: 164	Not sure brand but a nato case for sure, toss it. I ocassionally run into these from range pickup brass.

January 14, 2019, 10:40 AM	#7
BillM Senior Member Join Date: January 20, 2009 Location: Amity Oregon Posts: 793	It appears that the outer ring of the primer is still in the case? Not unusual in old military crimp ammo. Toss it. It appears to be a 9mm round made in 1941 by Defense Industries in Canada. WWII ammo, not sure if the primers were corrosive or not. One thing it is NOT is a piece of Nato brass. Nato didn't exist until 1949.

January 14, 2019, 11:00 AM	#8
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,568	Agree, looks like a "ringer" with the primer bonded to the pocket and the top punched out. Common enough that commercial reloaders have "ringer detectors" for their Camdexes. I have a stock of once fired TZZ .45s that gives some ringers. I suspect because it was chemically cleaned and not rinsed well. WWII Canadian 9mm was noncorrosive and good quality. I guess the large majority went to Sten guns, some to Inglis Brownings; but it sure shot well in a Luger.

January 14, 2019, 09:28 PM	#10
Average Joe Senior Member Join Date: August 29, 2005 Location: Central Florida Posts: 1,325	With 9mm cases being everywhere, I toss anything that looks like it might be a military case, why struggle ?

January 15, 2019, 10:27 AM	#11
reddog81 Senior Member Join Date: October 16, 2014 Location: Iowa Posts: 1,637	I always hand sort my 9mm cases. Too many potential problems otherwise - military cases, cases with an internal step, very similar in size to .380...

January 15, 2019, 11:05 AM	#12
locknloader Senior Member Join Date: August 28, 2017 Posts: 164	@reddog81 - god i had 380 cases..... such a pain to get out of a batch of mostly 9mm!

January 18, 2019, 08:55 AM	#14
Reloader270 Senior Member Join Date: March 14, 2015 Location: South Africa Posts: 138	I had been reloading some 9mmP loads for my son in law with an older RCBS Carbide Set. I had about 10 cases with undersized flash holes. The older decapping pins does not have the head and therefore it got stuck in the case. Had to remove them one by one. Now I understand why most reloading companies had changed to the headed decapping pins.