07Star
07Star
5 posts
Joined May 2009

Depriming Live Primers

I have about a dozen 45ACP shells that I have reprimed with fresh primers that are oversized.  Is there a safe way to remove these primers?  If not can anyone tell me the best way to dispose of the primed shells? Thanks
dillon
Administrator
dillon
3,110 posts
Joined July 2007

RE: Depriming Live Primers

Depriming live primers is hazardous, as it is very easy to set one of while depriming. If you must, first dump the spent primers out of the spent primer catcher cup. Fill the cup partway with water. Now very gently deprime them. The reason to fill the cup with water is so that if you detonate a primer while depriming, the other primers already in the cup won't ignite.
perro de diablo
perro de diablo
6 posts
Joined October 2008

RE: Depriming Live Primers

If you are going to dispose of the brass fill cases with penetrating oil and let soak then crush the mouths so you know not to reuse them, or you can load the primed cases into your firearm pointing in a safe direction and pop the primers. This can still be dangerous at the barrel end but will expend the primers so they can be safely decapped.
fprefect
fprefect
1 post
Joined November 2009

RE: Depriming Live Primers

I'm not going to use the term safe when using equipment for something it was not designed for, but I believe the safEST method of removing the unfired primers is just to treat them in the same way you would fired primers only when removing these unfired primers after putting on a pair of safety glasses, wrap the cartridge in a towel and use a slow steady pressure until the primer is removed.

I don't mean to imply this is a particularly dangerous procedure as I have used it on several occasions over the years without a single primer "firing".  It would probably be best not to attempt to use these primers once removed as they have small seating "legs" that are now flattened and the anvil could also have be damaged by the depriming tool during the procedure.  Take it slow and I don't believe you will have any problems.

F. Prefect

samsnake
samsnake
1 post
Joined February 2010

RE: Depriming Live Primers

I have read that WD40 will kill the primers, if you are following the instructions of perro who gave an option for disposing of the cases.

Snake
Aussie-66
Aussie-66
11 posts
Joined August 2011

RE: Depriming Live Primers

Good topic for a newbie like myself to read.
I like the idea of WD40 killing the primers and then de priming them but would not like to test the theory.
Im reloading 9mm and a new brass 9mm costs me 36 cents, for the sake of safety i think id Soak them in solvent and dispose of them safely.
Shell casings can be replaced eyes and fingers Can't

My Club Captain told me a story of one of our EX club presidents depriming live primers with a 6 inch nail.
Idoit had to have a primer cup surgically removed from his hand.
Happy loading
dillon
Administrator
dillon
3,110 posts
Joined July 2007

RE: Depriming Live Primers

WD-40 will "desensitize" primers, after 48-72 hours of immersion, it will not permanently kill them. Eventually the WD-40 will evaporate, and the primers regain their sensitivity to shock. This can take as little as several weeks.
D.G.G
D.G.G
26 posts
Joined March 2010

RE: Depriming Live Primers

Don't do i!

If you want to reuse the shell then fire the primed cartridges in your gun (like shooting a blank starter pistol). 

Depriming live primers is one of the most hazardous things you can do in reloading.

Remember, a primer is like a small hand grenade with the pin pulled!

wenadaco
wenadaco
1 post
Joined March 2015

RE: Depriming Live Primers

I have been reloading for about 10 years now and I deprime live primers on occasion. It is risky but I have done hundreds because of having to pull bullets because of picky guns match grade chambers. I have never had to do very many at one time but the way i do it is get a universal depriming die and put it in a single stage press with no live primer attachments and remove the primers with the die. I always wear safety glasses and leather gloves. I would never do this on a progressive press with a primer tube filled with live primers 2 inches away. Or if its brass I have thousands of its simply better to throw them in the trash. Choice is yours and yours alone.
Daver7
Daver7
4 posts
Joined October 2009

RE: Depriming Live Primers

Don't assume WD40 will kill primers. A few years back I filled 6 primed 38 spl cases with WD40 and let them set for a week. I then turned the cases upside down for about 30 minutes to drain them. I then loaded them with 231 and 158 gr SWC I also loaded 12 uncontaminated cases with the same load. I used a 4 inch S&W 586 no dash to test the loads.
I didn't see much difference between the contaminated and uncontaminated rounds. I'm not trusting anything to kill primers.
mvslay
mvslay
1 post
Joined July 2016

RE: Depriming Live Primers

I would suggest expending the primer in a firearm. Then resize and decap as usual. At .04 cents times 12 your safety is worth more than a can of coke. I know we all reload to save money, but some times you have to let some components go.