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Frosting in a bore

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July 1, 2013 - 4:22 pm

I understand roughness and pitting in a bore caused by poor cleaning and maybe black powder ammo, but frosting I do not understand. It seems that when a bore has frosting it is very dull in appearance, and not shiney. Does anyone know what causes frosting and the best way to maybe get rid of it? Also, does it affect accuracy? Thanks, Peter

Robert Delk

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July 1, 2013 - 5:41 pm

I think frosting is light corrosion that hasn’t got deep enough to be called pitting yet. My buddies 30-40 high wall has it just about full length of the barrel(#3 round)and it will shoot 2 inch by 4 inch groups at 100 yards with tang sights. It likes to string it’s groups vertically and wants to do it all the time.I don’t know the load but it is with cast bullets.