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Cleaning out zinc fouling. Need help

Home Forums General Reloading Discussion Cleaning out zinc fouling. Need help

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  • #540109
    Nathan Dively
    Participant

    Howdy,

    I’m running 9mm idaho nuke silvers out of my competition gun. Performance is great but the fouling is horrendous. I have tried Breakfree CLP, Mpro 7, Tapco, hoppes bore cleaner. Used stiff nylon brush, copper brush, copper tornado and steel tornado. Hoppes bore cleaner seems to have done the most work. Been at it for a couple days. Anyone else have lots of fouling and was able to get 100% out?

    “Mine doesnt do that”- not helpful response.

    “It shouldn’t be doing that” – also not helpful response.

    “Your crimp is too tight”- Tell me your crimp measurement. I understand these are crimp sensitive. “Light crimp” is not a measurement. My taper crimp is .378 to .379. I do get single digit SD’s with velocity and they print real tight groups at 20 yards.

    Current load:
    4.0 gr TG
    1.065- 1.07 OAL
    .378 taper crimp. Lee factory crimp die.
    Mixed brass

    Thanks in advance!

    #540470
    Dominic Domenici
    Participant

    I had petty heavy fouling with the 130 silvers.

    I used JB bore cleaner with a patch around a brass brush. Took a while but got it out and seems to lessen or prevent future zinking.

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