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  • 1 Post By Marty Henry

Thread: corrosive primers and suppressors

  1. #1
    Join Date
    May 2014

    corrosive primers and suppressors

    Looking for peoples ideas about this,if I am shooting corrosive primed ammo what effect would this have on a suppressor and how do i mitigate the problem?Do you just flush with boiling water like dealing with black powder?Or do you just have to accept the shorter life of the suppressor?
    Thanks in advance for any answers.

  2. #2
    Member norsk's Avatar
    Join Date
    Jun 2016
    alloy with an alloy suppressor its not going to matter (plenty of Alloy Boats in the sea).

    Steel Suppressor would need cleaning.
    "Sixty percent of the time,it works every time"

  3. #3
    Member Marty Henry's Avatar
    Join Date
    Oct 2014
    Short chemistry lesson, corrosive primers contain a mix of potassium chlorate, mercury fulminate, and sulphur, along with inerts like glass powder and talc. The biggest issue is the chlorate, on firing it turns to potassium chloride (think salt) this and water is what rusts barrels, not really a problem for aluminum but it is for steel and low grades of stainless. Mercury fulmunate decomposes to mercury, and while this is no worry for steel or stainless it will eat through the protective oxide layer and amalgamate with the aluminum and corrode it quick smart. Break a mercury thermoneter in an ali boat and watch it! Now there is very little of either of these in a corrosive primer think tenths of a grain so the effects wouldnt be seen quickly and while salt can be washed away mercury cant
    P38 likes this.

  4. #4
    Join Date
    Dec 2013
    They also stuff up the brass so wash that in soapy hot water, better still dump the primers and use modern non corrosive ones.

  5. #5
    Join Date
    May 2014
    Thanks for the answers.
    I have some of the Romainian milsurp from Aoraki ammo.
    Will see how it shoots out of various platforms and will keep an eye on what happens to the suppressors involved.

  6. #6
    Join Date
    Oct 2013
    Western BoP
    Ali suppressors will corrode out through crevasse corrosion which forms where two bits of ali touch. Had a Gunworks do it, good bastards repaired it FOC even though I wasn't the original purchaser. Had another cheap shitter do it as well, no good when your can pops.

    To be fair I would use a stainless can or a Ti version if using corrosive primed ammo. Ali fuc*s out in a fraction of the time of stainless when the acidic combustion byproducts get a head start such as when the can is put away in a sealed area straight after use and not allowed to dry out internally. It's the same reason that you shouldn't store the can on the rifle after shooting...

  7. #7
    Member 300CALMAN's Avatar
    Join Date
    Dec 2014
    MAE use 304 Stainless in their cans which is not suposed to like chloride too much. However I have already fired several hundred Chi-Com rounds through one of mine without any noticeable rust. However the thing was probably so well carbon coated to start with that the chloride hasn't even made it to the steel yet.



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