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doubloon · Post by **doubloon** » Mon Mar 21, 2016 11:09 pm

The general consensus from observation and testing by professionals is centerfire cans used with only good grade clean burning ammo simply don't accumulate much debris to begin with so no cleaning required.

A sealed centerfire can used for dirty ammo like 22lr or other unplated lead projectiles will gradually accumulate lead deposits over time from vaporized lead off the base of the projectiles. Shooting high power centerfire cartridges through a leaded up suppressor may eject loose debris but this is still not "self cleaning".

At least that's the available "wisdom".

The video you linked shows the suppressor being used with rimfire ammunition and it doesn't say how much. I would venture to guess the majority of the 1 oz fouling came from rimfire shooting.

JMOYMMV

rimshaker · Post by **rimshaker** » Tue Mar 22, 2016 12:32 am

Yes. Especially on shorter barrels.

Grounded · Post by **Grounded** » Tue Mar 22, 2016 9:38 pm

Running hot will build up all sorts of crap. Ill share some pics from my testing. In my opinion down stream didn't get too nasty but the blast baffle and second baffle built up some crap. I had carbon and copper depositing from the jackets that build up pretty thick.

rimshaker · Post by **rimshaker** » Wed Mar 23, 2016 5:23 pm

Grounded wrote:Running hot will build up all sorts of crap. Ill share some pics from my testing. In my opinion down stream didn't get too nasty but the blast baffle and second baffle built up some crap. I had carbon and copper depositing from the jackets that build up pretty thick.

Are we still talking about rifle rounds? Cause the blast chamber and first baffle on my Saker762 look almost squeaky clean (except the color) after several 556 mags.

whiterussian1974 · Post by **whiterussian1974** » Wed Mar 23, 2016 5:56 pm

rimshaker wrote:
Grounded wrote:Running hot will build up all sorts of crap. Ill share some pics from my testing. In my opinion down stream didn't get too nasty but the blast baffle and second baffle built up some crap. I had carbon and copper depositing from the jackets that build up pretty thick.
Are we still talking about rifle rounds? Cause the blast chamber and first baffle on my Saker762 look almost squeaky clean (except the color) after several 556 mags.

Report back after 5k rds. There will be carbon and powder caking in crevices where baffles meet tube. Some Copper spray may cause discoloration or not. Running detergent followed by hot water should be fine for cleaning. Do it every 200-500rds to prevent buildup b/t range trips. I'm surprised that no Mnfr sells "refresher" to soak inside after x# rds. Rubber, leather, etc all use conditioners. Metal, wood, etc also have micropores which benefit from periodic refreshing to cleanse environmental contaminates.

Grounded · Post by **Grounded** » Wed Mar 23, 2016 7:35 pm

rimshaker wrote:
Grounded wrote:Running hot will build up all sorts of crap. Ill share some pics from my testing. In my opinion down stream didn't get too nasty but the blast baffle and second baffle built up some crap. I had carbon and copper depositing from the jackets that build up pretty thick.
Are we still talking about rifle rounds? Cause the blast chamber and first baffle on my Saker762 look almost squeaky clean (except the color) after several 556 mags.

Try a very aggressive fire schedule and running at 900°+ for that and you will get some build up. Most people shooting a few mag dumps here and there won't see that need.

curtistactical · Post by **curtistactical** » Wed Mar 23, 2016 8:14 pm

Grounded wrote:
Try a very aggressive fire schedule and running at 900°+ for that and you will get some build up. Most people shooting a few mag dumps here and there won't see that need.

Yep, when you run full auto you learn this very quickly. We build all of our suppressors user serviceable, the one I took apart after 5000rds on a 10.5" M4 running M855 had some pretty good build up. It amazes me how much copper is deposited in the baffles along with the carbon.

Grounded · Post by **Grounded** » Thu Mar 24, 2016 7:40 am

curtistactical wrote:
Grounded wrote:
Try a very aggressive fire schedule and running at 900°+ for that and you will get some build up. Most people shooting a few mag dumps here and there won't see that need.
Yep, when you run full auto you learn this very quickly. We build all of our suppressors user serviceable, the one I took apart after 5000rds on a 10.5" M4 running M855 had some pretty good build up. It amazes me how much copper is deposited in the baffles along with the carbon.

I literally chucked up a baffle and turned the copper off lol.

silencer_kid · Post by **silencer_kid** » Thu Mar 24, 2016 7:53 am

maybe change the title of this thread to "all cans are self dirtying"

tf2addict · Post by **tf2addict** » Tue Mar 29, 2016 1:13 am

1.1 ounces of build up? That's amazing.

Pat M · Post by **Pat M** » Thu Mar 31, 2016 5:55 pm

viewtopic.php?f=2&t=126261

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