So I have a Remington .308 AR that has a 20" fluted CroMoly Barrel. I get approx. .75 MOA with it shooting from a bipod with match grade ammo. The issue I am having is that when I shoot fairly rapidly the barrel heats up and starts opening up my groups to about 2.5 MOA. The question is would a Stainless barrel help with heat dissipation and/or help to keep my groups close? I know CL barrels are made for better heat dissipation but you sacrifice accuracy for it.