Tom,you're killing' me.
The gun we talked about was the one at Cowen's auction house w/ the LOM case.27" barrels as I recall.
I prefer the shorebirds engraving on the A-1's.
Getting back to cleaning off oxidized oils,
Try window cleaner first. A little ammonia cleans off lots of grunge.
Don't go scrubbing with abrasives until you've exhausted simple chemical applications.
Acidic compounds will make a mess of it, so No Vinegar!
If you look online, you'll find people cleaning brass in ultrasonic cleaners, testing all kinds of different liquids.
Automatic trans fluid even has it's place.
Spic and Span is great.
Simple Green
But you should be able to dissolve oxidized oils, and the outermost metal oxides chemically before using abrasion.
It's the least invasive way to proceed in my view.
