Quite often a PH has to make do to a more or less extant with what is available and what he can afford. The 416 Rem is the no brainer of the 416s when it comes to that decision. Lots use that and the standard 458 because of ammo availability and price. As far as the Hogue, he scored it and it worked out?? And why not on the muzzle break? When he shoots, the blast ain't s$%%& compared to the shot he needs to make. As well as favoring a light rifle. He carries it a hell of a lot more than he uses it.
