Is PMC Bronze the Problem
Posted: Tue Oct 14, 2014 1:50 pm
I am asking if the use of PMC Bronze .45 230gr. FMJ ammo may have damaged the barrel of my Sig P220 .45 Match. I have had trouble lately getting the copper fouling out. This time, I really went after it, finally using some Outer's foaming copper remover. It turns blue as the copper is being removed. When I finally got it clean, I can now see what appears to be scratches/scoring along the sides of the grooves. Some internet research reveals that bronze is harder than brass and contains more copper and less tin.
Anyone else had this problem?
Anyone else had this problem?