In the process of rebuilding a 258 i6 for our 73 jeep, i came across a killer lube for locks! When installing a new cam and the valve train, you are supposed to use a moly lube for break in. Moly is super slick and allows the cam,lifters, pushrods, etc to break in smoothly and the moly gets embedded into the pores of the steel.
I am currently getting my stuff together for a bear hunt on the 16th and wasn't to happy with liquid wrench lithium grease. I used some of the Crane camss moly lube and holy smokes! I havent found anything slicker than this stuff! I did my triggers where everything rubs, removed my lock, cleaned it well and rubbed a small amount on all rubbing surfaces. My double set triggers are a TON quieter now and SLICK.
I know its a bit messy but i always use a soapy bath followed up by birchwood casey gun scrubber to blast other stuff off and to dry it out as well.
I did my flintlock as well and rubbed a little onto the frizzen spring, SMOOOOOOOTH!