Forget all things Silicone now.....its gone lithium based greases...
Tony Walls St2 or ST1
Deal with silicone grease is when the silicone separates it will gall even hardened steel..
Thus ....its not so much the mix as in the case of Molys but when it separates out...
It can be something as simple as some Youngs or WD used elsewhere but gravitating causing the components of the silicone moly to separate but i have heard theories on great pressure forces causing it...in an industry completed unrelated to the gun trade.
Its such mucky smell stuff anyway ...
Another good alternative is lubriplate ....the original white grease.....fine with just a dab now that we got Delrin guides and top hats etc.