Great info. But remember that the recommendations are based on the 5.56 cartridge recoil profile. If you change that recoil profile you need to reconsider how it is "best" dealt with.
Absolutely. Also it would seem if you don't know what buffer you need (but you have the standard), the smart money is to buy an H-3, and you can change out tungsten weights for steel until you get the gun to work the way you want.
When I despair, I remember that all through history the ways of truth and love have always won. There have been tyrants, and murderers, and for a time they can seem invincible, but in the end they always fall. Think of it--always.