I was shouldering my wingmaster and before i put in in my gun cabinet i wiped it down with a clean t shirt. anyway i saw at the top of the bolt when u held it in the light it looked like blue finger prints. i tried wiping it off with my shirt and didnt come off. then i folded my shirt around my finger and dabbed it with my tongue and wiped it. it came right off. I am thinking it was just manufactiring oil they put on so it doesnt rust. The t shirt happend to be blue as well? but its gone now

its also new not used

Welcome to the forum rc1988......
I wouldn't worry about it since you got it off. No telling what it was, it could very well have been something used when the gun was being assembled.Keep an eye on that area,but I would think it's a done deal.
Ruger Redhawk