Well, that is why I am going to run the tests.
The people that have "told me" their experiences are long-time PH's that have no reason to tell tales. I have owned two .416 Remington Mags myself, both custom rifles, the first built in 1989, and have had no problems, but then I never hunted with either in 120-degree temps, and I am not a hot-rodder either.
I guess you have somehow had bad luck with .416 Rigbys. My own CZ, as stated earlier, weighs 9-1/4 without scope (the same as Harry Selby's did) and 10 pounds on the nose with 2.5x Leupold in Talley rings.
