Terry you are right about the longer case, I have a Krag in .405 and the magazine box had to be massaged at both ends.

I recall when the NRA had a meeting, I think it was in San Antonio, Newton collector John Smyrl (a first class person who is no longer with us) had a High Wall with a shotgun butt in .25/.405 that Newton had been experimenting with. I also remember a heavy barrel .256 bolt gun in a sporter stock with a lot of engraving. Wonder who has them now.