using a counter sink to remove the military crimp?

rebs · October 11, 2012, 04:39 PM

Someone posted in a thread that a counter sink works well for swaging primer pockets, but I can't find the post or recall what size counter sink they said worked qwell.

Jim Watson · October 11, 2012, 05:03 PM

I don't think the size matters. They are all the same angle and will cut the crimp the same.

rebs · October 11, 2012, 05:40 PM

I tried a 3/4 inch countersink and it seems it doesn't go in far enough to get all the crimp. I am thinking maybe a 1/2 inch one might go in the primer hole a little further and get all the crimp ?

I was hoping someone that does the crimps this way could answer with what size they use and works for them.

iraiam · October 11, 2012, 06:22 PM

before I had an actual primer pocket swager, I used a 2 rod system that I called my redneck swager.

one rod went through the neck of the case and was long enough to touch the bottom of the case and stuck out a few inches, this end went in the vice.

The other rod was just a cold steel punch that I ground by hand on a benchtop grinder to be the right size, it was also tapered because all I wanted to do is remove the crimp at the base not resize the pocket.

I just put the one rod in in a vice stuck a case on it and lightly tapped the other rod into the primer pocket with a small hammer, crimp removed.

30Cal · October 11, 2012, 06:33 PM

I just chuck my case mouth chamfer tool in a drill.

jepp2 · October 11, 2012, 07:09 PM

Quote:

Someone posted in a thread that a counter sink works well for swaging primer pockets,

Semantics, but I would never call using a cutting device a way of "swaging" a crimped primer pocket.

Maybe I have way more to do than most, but I wouldn't ever consider using anything but a swage tool for crimped or "tight" primer pockets (like S&B). I much prefer to reform rather that just cut the ridge from the crimp. YMMV

wncchester · October 11, 2012, 07:53 PM

The diameter of a counter sink cutter hardly matters, as mentioned above they are generally ground with one of two common angles, neither of which is very good for crimp removal.

Lyman (maybe others) sells a proper crimp remover cutting tool for a modest price. Get one, chuck the cutter in a drill motor and use that.

medalguy · October 11, 2012, 08:18 PM

If you have a lot of brass to swage, the Dillon swager is the cat's meow.

hk33ka1 · October 11, 2012, 08:57 PM

Swaging is forcing the material away/back with a rod or nipple RSBS and Dillon have several swaging tools. Reaming and chamfering will cut it away with a sharp edge. Countersink bits will ream as will reamers from Lyman or a normal chamfering tool (slowest way)

HiBC · October 12, 2012, 04:17 AM

I was buying a Lyman VLD case chamfering tool from a fellow at a gun show,he told me they work well for removing crimps.Have not tried it.

If you expect to do a lot of them,the Dillon swage is hard to beat.

rebs · October 12, 2012, 06:01 AM

Quote:

The diameter of a counter sink cutter hardly matters, as mentioned above they are generally ground with one of two common angles, neither of which is very good for crimp removal.

Lyman (maybe others) sells a proper crimp remover cutting tool for a modest price. Get one, chuck the cutter in a drill motor and use that.
wncchester is offline Report Post

Does anyone have a link to this Lyman swag cutter tool ?

Rifleman1776 · October 12, 2012, 08:26 AM

This question comes up quite often and I don't understand why. There is a little reloading tool just for this job. Stick in, twist and you are done. I have done thousands. Not a big deal.

243winxb · October 12, 2012, 08:49 AM

Large http://www.midwayusa.com/product/682...mer-tool-large See Suggested Products on the same page for what you want to do. Countersinks are common in 60 & 82 degree, but come in others.

Slamfire · October 12, 2012, 09:08 AM

I used to ream, but I decided the Dillion primer pocket swager was faster and the pocket opening was more even.

droptrd · October 13, 2012, 04:54 PM

The Dillon is the best. I used a 1/2" countersink bit for a while. You could go smaller. But I strongly recommend getting the Dillon. Just get it and be done with it. Like all Dillon products - lifetime warranty.

October 11, 2012, 04:39 PM	#1
rebs Senior Member Join Date: January 10, 2012 Posts: 3,881	using a counter sink to remove the military crimp? Someone posted in a thread that a counter sink works well for swaging primer pockets, but I can't find the post or recall what size counter sink they said worked qwell.

October 11, 2012, 06:22 PM	#4
iraiam Senior Member Join Date: September 6, 2012 Location: Lakewood, CO Posts: 1,057	before I had an actual primer pocket swager, I used a 2 rod system that I called my redneck swager. one rod went through the neck of the case and was long enough to touch the bottom of the case and stuck out a few inches, this end went in the vice. The other rod was just a cold steel punch that I ground by hand on a benchtop grinder to be the right size, it was also tapered because all I wanted to do is remove the crimp at the base not resize the pocket. I just put the one rod in in a vice stuck a case on it and lightly tapped the other rod into the primer pocket with a small hammer, crimp removed. __________________ NRA Lifetime Member Since 1999 "I ask, sir, what is the militia? It is the whole people except for a few public officials." George Mason

October 12, 2012, 08:49 AM	#13
243winxb Senior Member Join Date: July 26, 2011 Location: USA Posts: 1,730	Uniformer & Reamer are Different. Large & Small sizes Large http://www.midwayusa.com/product/682...mer-tool-large See Suggested Products on the same page for what you want to do. Countersinks are common in 60 & 82 degree, but come in others.

October 12, 2012, 09:08 AM	#14
Slamfire Senior Member Join Date: May 27, 2007 Posts: 5,261	I used to ream, but I decided the Dillion primer pocket swager was faster and the pocket opening was more even. __________________ If I'm not shooting, I'm reloading.

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October 11, 2012, 05:03 PM	#2
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,534	I don't think the size matters. They are all the same angle and will cut the crimp the same.

October 11, 2012, 05:40 PM	#3
rebs Senior Member Join Date: January 10, 2012 Posts: 3,881	I tried a 3/4 inch countersink and it seems it doesn't go in far enough to get all the crimp. I am thinking maybe a 1/2 inch one might go in the primer hole a little further and get all the crimp ? I was hoping someone that does the crimps this way could answer with what size they use and works for them.

October 11, 2012, 06:33 PM	#5
30Cal Senior Member Join Date: December 3, 2002 Posts: 1,264	I just chuck my case mouth chamfer tool in a drill.

October 11, 2012, 07:53 PM	#7
wncchester Senior Member Join Date: December 1, 2002 Posts: 2,832	The diameter of a counter sink cutter hardly matters, as mentioned above they are generally ground with one of two common angles, neither of which is very good for crimp removal. Lyman (maybe others) sells a proper crimp remover cutting tool for a modest price. Get one, chuck the cutter in a drill motor and use that.

October 11, 2012, 08:18 PM	#8
medalguy Senior Member Join Date: August 31, 2009 Location: New Mexico Posts: 1,033	If you have a lot of brass to swage, the Dillon swager is the cat's meow.

October 11, 2012, 08:57 PM	#9
hk33ka1 Senior Member Join Date: April 20, 2010 Posts: 275	Swaging is forcing the material away/back with a rod or nipple RSBS and Dillon have several swaging tools. Reaming and chamfering will cut it away with a sharp edge. Countersink bits will ream as will reamers from Lyman or a normal chamfering tool (slowest way)

October 12, 2012, 04:17 AM	#10
HiBC Senior Member Join Date: November 13, 2006 Posts: 8,283	I was buying a Lyman VLD case chamfering tool from a fellow at a gun show,he told me they work well for removing crimps.Have not tried it. If you expect to do a lot of them,the Dillon swage is hard to beat.

October 12, 2012, 08:26 AM	#12
Rifleman1776 Senior Member Join Date: April 25, 2010 Location: Arkansas Posts: 3,309	This question comes up quite often and I don't understand why. There is a little reloading tool just for this job. Stick in, twist and you are done. I have done thousands. Not a big deal.

October 13, 2012, 04:54 PM	#15
droptrd Senior Member Join Date: September 22, 2011 Location: Illinois Posts: 342	The Dillon is the best. I used a 1/2" countersink bit for a while. You could go smaller. But I strongly recommend getting the Dillon. Just get it and be done with it. Like all Dillon products - lifetime warranty.