Transforming 9mm Luger to 9mm Mak brass

jal5 · July 15, 2010, 01:56 PM

I am using 9mm Luger brass to convert to 9mm mak. The most tedious part is after trimming them down to 9x18 doing the in/out chamfer on these little cases. I am trimming using Lymans Accutrimmer. I only have a small hand chamfer/deburring tool and the short cases don't fit flush with the cutting end for the outside case mouth deburring.

Any suggestions to speed up this part of the process? I am deburring the inside of the case, then flipping the tool over to put the case inside using a long tweezer to hold it inside while I debur the outside case mouth.

Hope that makes sense!
\
Joe

keebo52 · July 15, 2010, 02:48 PM

I use a lee case trimmer setup for 9 mak in a cordless drill and a lyman deburring tool. Just secure the case in the shell holder (chucked in drill), trim, champher/debur and remove. Easy as can be.

dlb435 · July 15, 2010, 04:31 PM

I don't know if this is going to work out. The base of the case is smaller in the MAK 9mm. You could have trouble loading the mags and getting the extractor to work reliably.

zxcvbob · July 15, 2010, 04:46 PM

I just deburr the insides of the trimmed cases, and let the carbide sizing die take care of the outside edge the first time I load them.

keebo52 · July 15, 2010, 05:17 PM

Quote:

I don't know if this is going to work out. The base of the case is smaller in the MAK 9mm. You could have trouble loading the mags and getting the extractor to work reliably.

They work just fine in my CZ82 and PA63.

vladan · July 15, 2010, 05:37 PM

I stopped deburring with chamfer/deburring tool, now I use Lee base that can be chucked in drill chuck and the simply use steel wool on the mouth of trimmed case when the case rotates.

lee n. field · July 15, 2010, 08:54 PM

Quote:

Any suggestions to speed up this part of the process?

Yeah, it's tedious.

Some kind of powered tool, is my only suggestion.

I've got 3 or 4 hundred 9x19 cases converted. It should hold me for a while. You might want to mark them with a sharpie, to distinguish them from unmodified brass.

Quote:

small hand chamfer/deburring tool and the short cases don't fit flush with the cutting end for the outside case mouth deburring.

Not sure what you mean here.

Quote:

I don't know if this is going to work out. The base of the case is smaller in the MAK 9mm. You could have trouble loading the mags and getting the extractor to work reliably.

It works just fine.

jal5 · July 15, 2010, 10:21 PM

The chamfer/deburring tool is a really small size, Lee I think. I can do the inside of the small cases easily but the outside of the mouth is a problem since I can place the case in the tool but cannot hold it in there securely enough to remove the burrs. I really need the appropriate case holder for the Lee tool part that chucks in the drill like some of you have described.

Anyone got an extra case holder for the Lee tool? I am working on 150 pcs. so it does get tedious. Yes I am marking them with a sharpie.

Joe

lee n. field · July 16, 2010, 08:06 AM

OK. I myself use the Lyman tool, which is plenty big enough.

Hmmm. Lyman's chamfer-deburr accessory looks like it might be a time and hand saver.

I should see if it would work on my RCBS trimmer.

**Mike Irwin** · July 16, 2010, 08:12 AM

Starline makes good, and relatively cheap, 9mm Mak brass.

I looked at converting a bunch of 9mm Luger brass years ago when Dad got his Mak, but then Starline announced it was going to make the Mak case.

jal5 · July 16, 2010, 01:18 PM

thanks Lee I didn't realize Lyman had those accessory heads for their trimmers. I think i will order one.

Joe

jal5 · December 29, 2010, 06:13 PM

I purchased the Lyman accessory for all their case trimmers to use on a large batch of 9mm cases that I trimmed down to 9x18. This thing is a winner, makes the task very simple and the deburring accessory should work on any caliber up to and including 45s. go to this page to see the accessory.
http://www.lymanproducts.com/lyman/c...-tool-main.php

Joe

July 15, 2010, 01:56 PM	#1
jal5 Senior Member Join Date: January 12, 2009 Location: NE Ohio Posts: 419	Transforming 9mm Luger to 9mm Mak brass I am using 9mm Luger brass to convert to 9mm mak. The most tedious part is after trimming them down to 9x18 doing the in/out chamfer on these little cases. I am trimming using Lymans Accutrimmer. I only have a small hand chamfer/deburring tool and the short cases don't fit flush with the cutting end for the outside case mouth deburring. Any suggestions to speed up this part of the process? I am deburring the inside of the case, then flipping the tool over to put the case inside using a long tweezer to hold it inside while I debur the outside case mouth. Hope that makes sense! \ Joe __________________ We live in the greatest country on Earth- always be thankful!

July 15, 2010, 04:46 PM	#4
zxcvbob Senior Member Join Date: December 20, 2007 Location: S.E. Minnesota Posts: 4,720	I just deburr the insides of the trimmed cases, and let the carbide sizing die take care of the outside edge the first time I load them. __________________ "Everything they do is so dramatic and flamboyant. It just makes me want to set myself on fire!" —Lucille Bluth

July 15, 2010, 10:21 PM	#8
jal5 Senior Member Join Date: January 12, 2009 Location: NE Ohio Posts: 419	The chamfer/deburring tool is a really small size, Lee I think. I can do the inside of the small cases easily but the outside of the mouth is a problem since I can place the case in the tool but cannot hold it in there securely enough to remove the burrs. I really need the appropriate case holder for the Lee tool part that chucks in the drill like some of you have described. Anyone got an extra case holder for the Lee tool? I am working on 150 pcs. so it does get tedious. Yes I am marking them with a sharpie. Joe __________________ We live in the greatest country on Earth- always be thankful!

July 16, 2010, 08:06 AM	#9
lee n. field Senior Member Join Date: October 12, 2002 Location: The same state as Mordor. Posts: 5,568	OK. I myself use the Lyman tool, which is plenty big enough. Hmmm. Lyman's chamfer-deburr accessory looks like it might be a time and hand saver. I should see if it would work on my RCBS trimmer. __________________ "As was the man of dust, so also are those who are of the dust, and as is the man of heaven, so also are those who are of heaven. Just as we have borne the image of the man of dust, we shall also bear the image of the man of heaven. "

July 16, 2010, 08:12 AM	#10
Mike Irwin Staff Join Date: April 13, 2000 Location: Northern Virginia Posts: 41,379	Starline makes good, and relatively cheap, 9mm Mak brass. I looked at converting a bunch of 9mm Luger brass years ago when Dad got his Mak, but then Starline announced it was going to make the Mak case. __________________ "The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza Baby Jesus cries when the fat redneck doesn't have military-grade firepower.

July 15, 2010, 02:48 PM	#2
keebo52 Senior Member Join Date: January 30, 2005 Posts: 244	I use a lee case trimmer setup for 9 mak in a cordless drill and a lyman deburring tool. Just secure the case in the shell holder (chucked in drill), trim, champher/debur and remove. Easy as can be.

July 15, 2010, 04:31 PM	#3
dlb435 Senior Member Join Date: January 26, 2009 Posts: 654	I don't know if this is going to work out. The base of the case is smaller in the MAK 9mm. You could have trouble loading the mags and getting the extractor to work reliably.

July 15, 2010, 05:37 PM	#6
vladan Senior Member Join Date: March 14, 2010 Location: Central Florida Posts: 813	I stopped deburring with chamfer/deburring tool, now I use Lee base that can be chucked in drill chuck and the simply use steel wool on the mouth of trimmed case when the case rotates.

July 16, 2010, 01:18 PM	#11
jal5 Senior Member Join Date: January 12, 2009 Location: NE Ohio Posts: 419	thanks Lee I didn't realize Lyman had those accessory heads for their trimmers. I think i will order one. Joe __________________ We live in the greatest country on Earth- always be thankful!

December 29, 2010, 06:13 PM	#12
jal5 Senior Member Join Date: January 12, 2009 Location: NE Ohio Posts: 419	update: Lyman trimmer accessory I purchased the Lyman accessory for all their case trimmers to use on a large batch of 9mm cases that I trimmed down to 9x18. This thing is a winner, makes the task very simple and the deburring accessory should work on any caliber up to and including 45s. go to this page to see the accessory. http://www.lymanproducts.com/lyman/c...-tool-main.php Joe __________________ We live in the greatest country on Earth- always be thankful!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search