I’m not up on a lot of what is spoken of here, but just wanted to pass this on. I’ve used a product called super lube for over 30 years on my brownings and other high polish finished guns. It’s a clear silicone grease that comes in aerosol or squeeze tube, I also use it on electrical connections as a corrosion preventive. Since using this I’ve never had a spot of rust develop and the hinges on the over/unders have never galled. Other greases used by others have failed causing damage to some very expensive guns. Being clear it is also easy to see when it’s time to clean and replace it. A good product that has served me well.