Man ... I didn't think anyone did that anymore.
it's mostly hitek or powder coating lately, where the only pitfall seems to be cut corners in the oven cure time.
For a time in the late 90's into the early 2K, moly was all the rage till folks discovered rust pitted bores from the stuff. Otherwise, the stuff worked.
It goes along with my vapor phase deposit theory. it doesn't protect the base of the bullet like plating or current poly coatings. Nor does it dilute the vapor deposit in sludge like traditional lubes did.
I'd say the stuff is doing it's job, despite the pitfalls of the system
As far as the front of the cylinder (for the OP) they all get dirty. Just clean it off. There will be some left but no need to go crazy cleaning as it will just come back next time you shoot.
