There is an absolutely stunning 458 B&M for sale on Accurate Innovations web site at the moment, for the true believers

quote:

Originally posted by Paul Truccolo:
There is an absolutely stunning 458 B&M for sale on Accurate Innovations web site at the moment, for the true believers

Some of us still shamelessly look at the prices on the menu.

I just ran across something called a 500 CYRUS.

It sounds like a .500" round limited to a short action, but perhaps based on the Rigby casehead. I couldn't find specs, but am guessing from descriptions and a picture. Unfortunately, it is not listed on AmmoGuide, so we lack that comparative cpacity algorithm and pretty pictures.

http://www.crossoutdoors.com/cartridges.html

A picture is listed in Guns Illustrated 2011, p123:
http://books.google.co.il/book...20comparison&f=false
Anyway, it sound like a sister, something ballistically close to the 50 B&M. If my picture reading was correct, it would have a shoulder for headspacing.

A good candidate.
There is a lot more involved in getting the 500 Cyrus to feed if I remember. I have handled and shot the 500 Cyrus. A punchy gun. I would prefer without the rebated rim and a tad shorter to use .510 bullets. I think they did make a .510 version but the problem would be OAL for a short action. A 2.25" Rigby case necked to .510 would be about perfect if you did not mind the smith bill.