Welcome, Seth. Glad to have you.

I like to begin with an extended ultrasonic cleaning of all metal parts, doing the action assembled and whole. It is nothing short of amazing how much the original case colors can sometimes be restored. And, how clean you can get the action's working parts without disassembly.

I then proceed as you, with gentle cleaning with mineral spirits or kerosene as needed.

May God bless America and those who defend her.