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Old June 5, 2012, 08:20 AM   #1
rebs
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removing military crimp

After all the troubles I had trying to remove military crimp using a deburring tool, primer pocket reamer,etc..

I read this on another site and gave it a try, it worked great.
I put a 3/8" drill bit in a cordless screw driver and only gave it about 3 turns and the crimp is gone. The new primers go in perfectly. This is the easiest, fastest way I have found so far.
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Old June 5, 2012, 09:25 AM   #2
Ole 5 hole group
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Depending upon the brass etc there are some methods that work better than others, but for about every type of brass out there that needs the primer pocket swaged easily and quickly the Dillon tool is a mighty fine long term investment.

http://www.dillonprecision.com/conte...uper_Swage_600
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Old June 5, 2012, 01:08 PM   #3
rebs
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A Dillon is just out of my price range, especially for as many as I will swag. 1000 cases reloaded 5 times = 5000 cases and will last me a year or more.
A $2.50 drill bit is just way more cost effective for me.
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Old June 5, 2012, 01:31 PM   #4
Marco Califo
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Any blade will do

Couple days ago I came across one crimped case while priming a batch. I grabbed the nearest bladed tool: pruners - a couple of twists and the primer went right in. I have used knives, screw drivers, etc. I have the RCBS tool but only like to use it for 500 or more at one time. Best bet is to buy processed brass, www.GIbrass.com, glad I did.
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Old June 5, 2012, 04:10 PM   #5
moxie
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I have the RCBS tool and it works great, but this way sounds so good I'm going to try it. thanks.
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Old June 6, 2012, 06:26 AM   #6
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Rebs, 3/8 is way to large. Maybe 3/16's is what you meant?
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Old June 6, 2012, 07:51 AM   #7
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+1 on the Dillon. Reloading tools are life time investments. When the cost of a tool is spread over that period it's cost per use is minimal.
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Old June 6, 2012, 07:59 AM   #8
rebs
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Quote:
Rebs, 3/8 is way to large. Maybe 3/16's is what you meant?
3/16 would be way too small and would easily go right into the pocket, I use 3/8 to just remove the crimp at the top of the pocket. You don't want the drill to go into the pocket, just remove the crimp from the top. This method is really fast and easy, I did about 200 cases and everyone took a primer perfectly
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Old June 6, 2012, 01:49 PM   #9
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3/16" is 0.1875". Large primer pockets are about 0.210" most of the way to the bottom. Small are just under 0.175". 3/8" is 0.375", so I'm guessing we're not understanding where the measurement is taken or we're not understanding how the screwdriver is being used.
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Old June 6, 2012, 01:59 PM   #10
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I use the Lyman bit chucked in a slow-turning drill press. I have a little jig to keep the brass steady and in line with the bit. It takes no time at all to de-crimp a bunch of .30-06 brass.

I tried using it by hand, but it only took about five or six cases before my fingers started getting sore.

The Dillon tool looks pretty nice - if I didn't already have the drill press, I'd consider it.
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Old June 6, 2012, 02:15 PM   #11
rebs
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Quote:
3/16" is 0.1875". Large primer pockets are about 0.210" most of the way to the bottom. Small are just under 0.175". 3/8" is 0.375", so I'm guessing we're not understanding where the measurement is taken or we're not understanding how the screwdriver is being used.
I am using a 3/8 drill, all I want to do is remove the crimp nothing more. The crimp is at the top of the primer hole.
Give it a try.
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Old June 6, 2012, 05:54 PM   #12
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I see now Rebs, thanx for clearing me up on that, it's just basically taking very little of the mouth out. Gotcha.
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Old June 6, 2012, 08:58 PM   #13
rebs
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Quote:
I see now Rebs, thanx for clearing me up on that, it's just basically taking very little of the mouth out. Gotcha.
Yes thats all it takes to get rid of the crimp. You are removing very little brass.
I have found this to be the easiest, quickest and inexpensive way to do it.
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Old June 9, 2012, 05:08 PM   #14
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I just got 500 .308 cases (LC with 2011 headstamps) from the Brassman that needed pre-processing. I used a Lee Universal Decapper to punch the old primers out and my Dillon Super-Swage to swage out the crimp. It took me right at 2 hours to complete both tasks at a moderate, watching John Wayne in the background, pace. I'd still be futzing around with it with any other tool.

Watch out for the lure of a false economy, it'll cost you in the end.
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Old June 11, 2012, 06:42 PM   #15
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I've used a broad angle counter sink before with good results, or you might try chucking up your two ended chamfer tool in a drill press; a light touch at low rpm does the trick. BTW, you use the post on the outside chamfer cutter to chuck it up; or even a hand drill, lightly clamped to your bench will work. Both methods work well. Rod
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Old June 13, 2012, 06:08 PM   #16
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I just screwed the tip from the RCBS hand tool into one of the positions on their case prep center and it takes only a second to "decrimp" the primer pocket ... you get a nice chamfered edge when you're done!
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