Long time lurker, short time poster. Thanks for the interesting reads and tonne of info.
Recently just got my new savage 10FCP. After putting probably 300 round through it over the last few months, I looked at the bolt face and noticed a nice smearing of brass? Never any chips, just this 'smear'. Can anyone provide any info on what this could be. I've attached some pictures of the face so you can see exactly what I am talking about.
Location: SOCIALIST CONTROLLED TERRITORY OF NEW YORK
Re: Brass on the bolt face
Normal, there is an explosion in there you know that is held in place by the lugs and bears right on the bolt face. Also every time you rotate your bolt the bolt face turns on the bottom of the case(friction).
If these rounds are reloads, check your brass also. Look for flat/cratered primers and shiny areas on the base just to be sure the rounds are not too hot. Also, when you open the bolt, how much resistance is there? Otherwise, just use a Q-tip to clean and shoot on.
like said above, copper solvent and a q-tip, toothbrush(not yours of course<G>) and/or a towel will get it in short order. Usually happens in N.D. only when the wind blows from the west and if you have a rough bolt-face.