Well someone with a .416 Remington (or Rigby) weigh it and let me know. If it has a scope on it just let me know what it is and I'll back that weight out.

I read an article that said the .458 Win weighs 9 pounds and the .450-400 weighs 7.75 pounds. There's a good chance the .416 has the same weight as the latter but I'd like to be sure.