Iv just got a gun back that I sold to a mate 4 yrs ago and im unsure if the bore is pitted or not? The bores were spotless when I sold it to him and he hasn't fired more than a thousand cartridges so is it possible there pitted or does it just want a good clean? I haven't had a chance to clean it yet so il see what that brings, but just wanted to know what pitting looks like. Its a Miroku o/u 12 bore and its fairly old but still quite tight and to be honest il be gutted if it is pitting, any advice would be great folks, cheers