Cybercat-

I can remember christmases where I was wishing for and sorely in need of a lump of coal. Good for you a rifle's on it's way, regardless of it's state of tune!

470-

No ruffled feathers.
The forum member named 450no2NE (or some spelling to that effect) has posted some of his loads with that cartridge, he gets a pretty incredible range of usefulness out of the cartridge.
He and others have attributed the huge case volume to some extent of that feature of the chambering.

Any way it goes, I thought I'd be able to let you in on this amazing development deal...

--Tinker