No roughness or pitting. I just figured if it was indeed a coated bore then it should have been pretty clean.
I don't know what rust smells like but about all I could smell on the patch was what the whole bag of patches smells like.
FYI: I did remove the scope base to see how the factory supplied sight would work and ended up having to insert an allen bit in to the screw head and rap it a few times in each screw to make them easier to turn out. Used a 1/4" box end on the bit to remove screws.
If I had tried much harder before tapping the bit I would have rounded to screws out.
Factory supplied sights do not appear to be usable. The stock design is intended for a scope set up. I had to really drive my cheekbone into the comb and still was barely able to get the front sight down in the rear notch with the rear sight slid all the way up. It might work if the front sight were about 1/4" shorter, pretty tall at 5/8" form base to top of fiber.
I hope not too many guys buy this gun thinking they are going to use open sights.