Are all "decoppering" powders the same? I think not!

Discussion in 'Handloading and Reloading' started by Fatelvis, Aug 20, 2017.

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  1. Fatelvis

    Fatelvis Member

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    After using CFE223 in my 222 Rem this year for F-class, I'm very impressed on how copper-free it has left my bore. It does leave a black, sooty material behind, but is easily removed with a few wet patches. It shows almost no hint of blue, even after soaking with Shooter's Choice.
    On the other hand, I was told, and later confirmed with a call to the factory rep, that the Alliant Reloader series powders all had decoppering properties (except for RL17). I've used RL15 for about 8 yrs now in highpower, shooting and cleaning MANY times. I can tell you, I had to confirm that what I heard was true, because between my 223 ARs and my 308 M1A, I was continually cleaning copper from my bores. Patches were always coming out blue.
    Does Alliant not put as much Bismuth, (or whatever the "magic" ingredient is) into their powder, or is it another variable, such as cartridge, powder level, bore condition, etc.?
    Any input or experiences would be appreciated. Thanks!
     
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  2. ants

    ants Member

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    I've burned a lot of R-15, R-19 and R-22. I get blue patches with my copper killer (Barnes CR10) just like you do.
    So those powders are not quite as effective, or maybe it would be a lot worse without those copper fouling reducers.
    In any case, those are good powders so I keep using them.

    P.S. I've used Shooters Choice, but I think the Barnes solvent uses fewer patches for the same clean.
    Montana Xtreme Kopper Killer is one of the best. I tried Gunslick's copper solvent but it worked poorly.
    Just my experience.
     
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  3. 243winxb

    243winxb Member

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    Study the msds of the powders. Google the additives.

    CFE® 223 Tin Dioxide

    http://www.google.com/patents/US20050115452 de-coppering additive patent.
    a mixture of tin and bismuth is a very good decoppering agent.

    An OLD common decoppering agent is a sheet of lead foil deposited between the propellant and the projectile.
     
    Last edited: Aug 20, 2017
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