Thread: Rust in Bore
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Old November 14, 2012, 07:28 AM   #16
mehavey
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Join Date: June 17, 2010
Location: Virginia
Posts: 3,007
Quote:
Originally Posted by OP
When I was cleaning it after the last time I shot towards the end some of the patches
were coming out like dark red in the middle. This was after I let it sit for a while with KG 12 in
the bore (first time ever using KG12).
NOT rust.

KG-12 causes copper to dry patch out in brown (repeat, reddish BROWN) color. The volume of that 'color' that comes out of a badly coppered barrel surprises most people.

Keep using it. There is no better copper remover (and it'll also get the multilayers layers of copper/powder 'sandwich' out as well.)
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