It's always interesting to see how consistent ones opinion is from old threads to the present. I think the post on the last page was my only post.

My choice would be a .404 Jeffery. Not technically a .416 but I'm not a big one for irrelevant rules.

Yes if I had a new double rifle, still a .416 Rigby No.2 or a .500/416 NE, or a .375 Flanged. Scoped. As my general world hunting rifle. Probably the .375 as I'd hope it would see a lot of use on medium game, deer at home, ferals etc.

I've thought a set of custom Tikka/Valmet barrels U/O in .416 might be a short cut, ie cheaper. Not the same as a nice side by side.