PK brake cleaning ?????

Discussion in 'Equipment Discussions' started by Varmint Hunter, Sep 19, 2010.

  1. Varmint Hunter

    Varmint Hunter Well-Known Member

    Dec 26, 2001
    I've got a few PK brakes and they work unbelievably well. Been shooting quite often with the braked rifles and like to keep the brakes clean.

    While cleaning the rifle bore with Wipe-Out I decided to give it a try on the brake too. I laid the brake on a clean rag and sprayed the foam into it. Almost immediately light blue foam started to expand out of the ports. I was surprised because I always assumed that only carbon deposits collected in the brake which is why I usually use a carbon remover in them. The blue foam would indicate that copper was present in some form or another.

    Any thoughts on this?

    ROBSTER Well-Known Member

    Sep 24, 2009
    wouldn`t it be the same as shooting lead bullets the hot gasses erode a little bit of the copper bullet and end up getting deposited on the brake as the gasses are exoanding and changeing directions.