I believe the 500/416 is a fine cartridge, and is being chambered in several double rifles today. However, big bore double users, seem to like the .450 cal, and up more than the .416. The thing that it might do is, convert a lot of 416 bolt rifle users to go to double rifles.

I think the 500/416 is here to stay, yet I don't think it will ever be as popular as the older chamberings, that are .450, and above in doubles. It is about as close, as one can get to the, very popular, 450/400, however, and is a great cartridge that will have a, not overwhelming, following,IMO ! I personally like the 500/450 better, though componants are harder to come by! All opinion, nothing more!