Depriming Military brass!

poline · May 17, 2012, 04:40 PM

I need to deprime a 1000 or more .223 military brass. Does anyone have a thought as to what I might use to remove the military crimp. Thanks, in advance, for any and all replys.

jerryd · May 17, 2012, 04:57 PM

Military crimp remover, RCBS and a few others make dies for this, check with midway or brownells.

wncchester · May 17, 2012, 05:14 PM

I prefer Lyman's crimp removing reamer, with the cutter chucked in a battery drill. It's a low cost tool, does an excellant job, very simple to use and doesn't remove too much metal.

Lee's Universal Decap die is inexpensive and has the strongest decapper stem in the business.

m&p45acp10+1 · May 17, 2012, 05:39 PM

Standard FL resizing will deprime them. If you want to remove the crimp from the primer pocket as was said the Lyman Small Primer Pocket Reamer works just fine. If you plan on also trimming I would suggest doing a hundred or so at a time. I burn out trimming if I do more than a couple of hundred at a time.

CherokeeT · May 17, 2012, 05:45 PM

Dillon makes an nice crimp remover that swages the primer pocket rather than cut it, but its not cheap. It's worth the cost if you will be doing a lot of GI brass (223, 308, 9mm, 45 ACP) in the future.

moxie · May 17, 2012, 06:45 PM

The RCBS bench tool works well. Same principle as the Dillon, but about $25 less.

Jimro · May 17, 2012, 07:11 PM

I'm cheap, I use a countersink bit chucked into a drill. Not exactly "precision" like the tools mentioned above, but it works and hasn't given me any reason to question the accuracy of the ammo produced.

Jimro

wncchester · May 17, 2012, 08:51 PM

"I use a countersink bit...hasn't given me any reason to question the accuracy of the ammo produced."

It won't affect the accuracy at all but the angle of a countersink reqires removing a lot of case support for the primers in order to cut deep enough to remove all of the crimp; some of us are uncomfortable with that. The Lyman reamer leaves a very small radius at the mouth of the pocket.

Mals9 · May 17, 2012, 10:39 PM

I used a large phillips bit chucked in the drill press. Works great and set me back about $0.26.

Mals

sc928porsche · May 18, 2012, 12:37 AM

RCBS also makes one.

dlburns · May 18, 2012, 01:12 AM

I have the Dillon deprimer and it works like a dream. There is a bunch of mods that you can do to it to more 'automate' it on YouTube.

Sport45 · May 18, 2012, 01:39 AM

Deprime the same way you do any other boxer brass.

I remove the crimp with a Hornady pocket reamer. If I have a lot to de-crimp I chuck the reamer in a drill that's clamped into my bench vise. Next time, i'll use the new drill press and see how than works.

May 17, 2012, 04:40 PM	#1
poline Senior Member Join Date: January 27, 2009 Location: Richmond,Va Posts: 256	Depriming Military brass! I need to deprime a 1000 or more .223 military brass. Does anyone have a thought as to what I might use to remove the military crimp. Thanks, in advance, for any and all replys.

May 17, 2012, 05:14 PM	#3
wncchester Senior Member Join Date: December 1, 2002 Posts: 2,700	I prefer Lyman's crimp removing reamer, with the cutter chucked in a battery drill. It's a low cost tool, does an excellant job, very simple to use and doesn't remove too much metal. Lee's Universal Decap die is inexpensive and has the strongest decapper stem in the business. Last edited by wncchester; May 17, 2012 at 05:21 PM.

May 17, 2012, 05:39 PM	#4
m&p45acp10+1 Senior Member Join Date: May 3, 2009 Location: Central Texas Posts: 3,116	Standard FL resizing will deprime them. If you want to remove the crimp from the primer pocket as was said the Lyman Small Primer Pocket Reamer works just fine. If you plan on also trimming I would suggest doing a hundred or so at a time. I burn out trimming if I do more than a couple of hundred at a time. __________________ No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.

May 17, 2012, 05:45 PM	#5
CherokeeT Senior Member Join Date: April 23, 2008 Location: Medina, Ohio Posts: 258	Dillon makes an nice crimp remover that swages the primer pocket rather than cut it, but its not cheap. It's worth the cost if you will be doing a lot of GI brass (223, 308, 9mm, 45 ACP) in the future. __________________ God Bless America US Army, NRA Endowment TSRA Life, SASS

May 17, 2012, 06:45 PM	#6
moxie Senior Member Join Date: October 17, 2006 Location: TX Posts: 513	The RCBS bench tool works well. Same principle as the Dillon, but about $25 less. __________________ If you want to shoot...shoot...don't talk! Tuco USAF Munitions 1969-1992 RVN 1972-1973

May 17, 2012, 04:57 PM	#2
jerryd Senior Member Join Date: May 21, 2004 Location: Ct. Posts: 100	Military crimp remover, RCBS and a few others make dies for this, check with midway or brownells.

May 17, 2012, 07:11 PM	#7
Jimro Senior Member Join Date: October 18, 2006 Posts: 4,267	I'm cheap, I use a countersink bit chucked into a drill. Not exactly "precision" like the tools mentioned above, but it works and hasn't given me any reason to question the accuracy of the ammo produced. Jimro __________________ "Gorsh" said Goofy as secondary explosions racked the beaten zone, "Did I do that?" http://randomthoughtsandguns.blogspot.com/

May 17, 2012, 08:51 PM	#8
wncchester Senior Member Join Date: December 1, 2002 Posts: 2,700	"I use a countersink bit...hasn't given me any reason to question the accuracy of the ammo produced." It won't affect the accuracy at all but the angle of a countersink reqires removing a lot of case support for the primers in order to cut deep enough to remove all of the crimp; some of us are uncomfortable with that. The Lyman reamer leaves a very small radius at the mouth of the pocket.

May 17, 2012, 10:39 PM	#9
Mals9 Member Join Date: May 16, 2010 Posts: 48	I used a large phillips bit chucked in the drill press. Works great and set me back about $0.26. Mals

May 18, 2012, 12:37 AM	#10
sc928porsche Senior Member Join Date: May 29, 2008 Location: now living in alabama Posts: 2,325	RCBS also makes one. __________________ No such thing as a stupid question. What is stupid is not asking it.

May 18, 2012, 01:12 AM	#11
dlburns Junior Member Join Date: September 11, 2011 Location: San Jose CA Posts: 3	Dillon 600 I have the Dillon deprimer and it works like a dream. There is a bunch of mods that you can do to it to more 'automate' it on YouTube.

May 18, 2012, 01:39 AM	#12
Sport45 Senior Member Join Date: May 26, 1999 Location: Too close to Houston Posts: 3,957	Deprime the same way you do any other boxer brass. I remove the crimp with a Hornady pocket reamer. If I have a lot to de-crimp I chuck the reamer in a drill that's clamped into my bench vise. Next time, i'll use the new drill press and see how than works. __________________ Proud member of the NRA and Texas State Rifle Association. Registered and active voter.