I recently found an sp101 in 357 4.2 inch barrel etc for sale on arms list. I low balled they guy and he bit. Long story short, I am now the owner of my first wheel gun! Yay, right? Well the thing was really dirty when I picked it up, and since it was only a few degrees outside i didn't run a patch through it like I usually would before handing over cash. He said he only put a box and a few through it. He gave me the rest of the 180grain buffalo bore (three missing, haha, though they are brutal with the match champion grips). I get it home and clean it up, and there is a dark spot on one of the lands, and a partial spot on the one next to it. It looks like a crappy tooling mark from boring the bore, though it could be from a squib. I can just barely feel it with a fine pin.
Q1.
Has anyone ever seen a squib only affect a small part of the bore, and not leave a ring? I have personally ringed two barrels (a 22 marlin papoose, and a colt series 70 1911 45acp) and seen a few more, they have all been a "ring" shape.
Q2.
If it is a tooling mark, what is the chance of getting ruger to do something about it, being the second owner?
Here is the best pic I could get.