Agreed--

If Heym has the stones and is not lawyer shy and makes a run of 450/400 --great!! This round does a 400 gr bullet at 2150 with ~4100ft/pnds of energy.Great combo and a lighter gun vs the 5000+ft/pounds of energy of some of the 450+ class of "heavy" Doubles.

A 450/416 would do the same ballistics in a similar package as a 450/400. Superfluous and redundant?? Of course, but thus it could be made lawyer proof. No manufacturor wishes to risk the farm due to an ammo screw up.

In 450/400 or 45/416 or whatever format reproduced-sounds like a 400gr bullet at 2150 with 4100 ftpounds of energy would be a coveted Double to own.