Lines in case

learningcurve · July 18, 2012, 05:55 PM

Ok I just got a new order of brass in from a order I placed. Two questions.
1: is my understanding that 9x19 brass is swappable for 9mm. They look th same height and diameter.

2: there are quite a few that have what looks like a cannelure from a bullet printed into them. Is this ok? Here is a picture of the brass. uploadfromtaptalk1342652131217.jpg
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ScottRiqui · July 18, 2012, 06:15 PM

Yes, 9mm x 19 is the same case as 9mm Luger, 9mm Parabellum, and 9mm NATO.

The marks on the outside of the case also extend to the inside of the case. They're meant to help keep bullets from setting back in the case if they hit the feed ramp wrong. You can ignore them when you're reloading.

jepp2 · July 18, 2012, 06:16 PM

The 9mm you are interested in is described here to help differentiate it from the 9 X 18 Makarov round and the 9 X 21 round.

9mm Luger, Parabellum, 9mm etc. are all the same designation but come from different origins.

The mark on the case is basically a ring to assist the case in resisting setback as the round slams into the feedramp during the chambering action.

learningcurve · July 18, 2012, 06:20 PM

Thank you for the help. I was a little worried. I ordered them from a trusted site but that concerned me. I will go ahead as planned now. Thank you very much for the replies.

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moxie · July 18, 2012, 06:27 PM

For clarity, bullets don't setback from recoil, they "jump."

Jump is usually only seen in heavy recoiling revolvers, where it can cause a bullet to move out of the case (the opposite of setback) and tie up a cylinder.

ScottRiqui · July 18, 2012, 06:33 PM

Thanks for the correction, and of course you're absolutely correct - I had a momentary brain fart. I'll edit my first post.

snuffy · July 18, 2012, 07:04 PM

I bet if you check the headstamp, they're all Federal! They love to do that, don't ask me why.

As for the set back and jump forward, the outside-the-case-cannelure, is to prevent set-back of the bullet when it strikes the feed ramp of the barrel. Sort of a ledge the bullet can't go past. Ignore it as far as loading them goes. They may fail sooner than non-cannelured cases, because the cannelure weakens the brass.

That looks to be mixed headstamp brass. It will load alright, but don't expect target accuracy from it. The ONLY way I'll buy once fired brass is if it is sorted, all the same headstamp.

Sent from my backyard via smoke signals!

mehavey · July 18, 2012, 09:22 PM

Quote:

Originally Posted by Moxie

...For clarity, bullets don't setback from recoil, they "jump."

Quote:

Originally Posted by Scott

...marks on the outside of the case also extend to the inside of the case. They're meant to help keep bullets from setting back in the case if they hit the feed ramp

In this case you are both equally and oppositely... correct.

serf 'rett · July 19, 2012, 12:52 AM

Not just Federal; I seem to remember recently picking up a pile of Remington brass with the lines.

dacaur · July 19, 2012, 10:55 PM

Quote:

2: there are quite a few that have what looks like a cannelure from a bullet printed into them. Is this ok? Here is a picture of the brass. uploadfromtaptalk1342652131217.jpg

I have only ever seen those marks on +p ammo....

As for bullet setback vs jump, in revolvers bullets jump from recoil, in autos they setback from striking the feed ramp...

July 18, 2012, 05:55 PM	#1
learningcurve Member Join Date: May 18, 2012 Location: Oklahoma City Posts: 87	Lines in case Ok I just got a new order of brass in from a order I placed. Two questions. 1: is my understanding that 9x19 brass is swappable for 9mm. They look th same height and diameter. 2: there are quite a few that have what looks like a cannelure from a bullet printed into them. Is this ok? Here is a picture of the brass. uploadfromtaptalk1342652131217.jpg Sent from my SPH-L710 using Tapatalk 2

July 18, 2012, 06:15 PM	#2
ScottRiqui Senior Member Join Date: January 27, 2010 Location: Norfolk, VA Posts: 2,905	Yes, 9mm x 19 is the same case as 9mm Luger, 9mm Parabellum, and 9mm NATO. The marks on the outside of the case also extend to the inside of the case. They're meant to help keep bullets from setting back in the case if they hit the feed ramp wrong. You can ignore them when you're reloading. Last edited by ScottRiqui; July 18, 2012 at 06:34 PM. Reason: Removed incorrect info.

July 18, 2012, 06:27 PM	#5
moxie Senior Member Join Date: October 17, 2006 Location: TX Posts: 513	For clarity, bullets don't setback from recoil, they "jump." Jump is usually only seen in heavy recoiling revolvers, where it can cause a bullet to move out of the case (the opposite of setback) and tie up a cylinder. __________________ If you want to shoot...shoot...don't talk! Tuco USAF Munitions 1969-1992 RVN 1972-1973

July 18, 2012, 07:04 PM	#7
snuffy Senior Member Join Date: May 20, 2001 Location: Oshkosh wi. Posts: 3,055	I bet if you check the headstamp, they're all Federal! They love to do that, don't ask me why. As for the set back and jump forward, the outside-the-case-cannelure, is to prevent set-back of the bullet when it strikes the feed ramp of the barrel. Sort of a ledge the bullet can't go past. Ignore it as far as loading them goes. They may fail sooner than non-cannelured cases, because the cannelure weakens the brass. That looks to be mixed headstamp brass. It will load alright, but don't expect target accuracy from it. The ONLY way I'll buy once fired brass is if it is sorted, all the same headstamp. Sent from my backyard via smoke signals! __________________ The more people I meet, the more I love my dog They're going to get their butts kicked over there this election. How come people can't spell and use words correctly?

July 19, 2012, 12:52 AM	#9
serf 'rett Senior Member Join Date: June 25, 2009 Location: Stuttgart, AR Posts: 1,569	Not just Federal; I seem to remember recently picking up a pile of Remington brass with the lines. __________________ A lack of planning on your part does not necessarily constitute an emergency on my part.

July 18, 2012, 06:16 PM	#3
jepp2 Senior Member Join Date: December 24, 2008 Location: Loveland, CO Posts: 1,476	The 9mm you are interested in is described here to help differentiate it from the 9 X 18 Makarov round and the 9 X 21 round. 9mm Luger, Parabellum, 9mm etc. are all the same designation but come from different origins. The mark on the case is basically a ring to assist the case in resisting setback as the round slams into the feedramp during the chambering action.

July 18, 2012, 06:20 PM	#4
learningcurve Member Join Date: May 18, 2012 Location: Oklahoma City Posts: 87	Thank you for the help. I was a little worried. I ordered them from a trusted site but that concerned me. I will go ahead as planned now. Thank you very much for the replies. Sent from my SPH-L710 using Tapatalk 2

July 18, 2012, 06:33 PM	#6
ScottRiqui Senior Member Join Date: January 27, 2010 Location: Norfolk, VA Posts: 2,905	Thanks for the correction, and of course you're absolutely correct - I had a momentary brain fart. I'll edit my first post.

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