This is another development by Ed Hubel and the 499 Hubel is based on the 475 No. 2 Nitro Express case.    

Designed during the mid 1970's by Art Alphin after an encouter with a buffalo in Africa. it is a shorter version than the 500 A-Square and less powerful than the 460 Weatherby but gives the advantage of the larger diameter bullet.

   One of the bigger Weatherby wildcats. It is based on the 460 Weatherby opened up to .483"

- info to follow -

This is basically a 375 H&H case necked up to .470cal.   The red base version is a PROOF round  

        Supposed to be the rimmed version of the 460 G&A.

   Like the standard 460 G&A, the 460 Long is based on the 404 Jeffery basic 3" case necked up with the shoulder pushed forward.

Based on the 404 Jeffery case, necked to .458” the idea came from Tom Siatos, executive publisher of Guns & Ammo magazine, hence the name (Big Bore Rifles, Feb 1995, article by Jack Lott).

Proprietary load by A-Square. Looks like a shortened version of the 460 Weatherby 

This cartridge was developed by Michael A Wayne from Alliance Armament in 2010. Where most developments like these were done on the AR platform, this cartridge operates from the AK-47 platform. It is based on the Remington SAUM case and was developed for tactical...

The 46 Winchester Center Fire is a rare experimental cartridge by Winchester dating from 1912 for a Model 1886 rifle that was never marketed. There was a reference to the 46 WCF in IAA Journal #380 Nov/Dec '94 which quoted a Gun Report article from Feb. 1956 p.9. This...

3 Prototype loadings for the 458 Win Mag. The 2 no h/s variations are both early Winchester            Commemorative chromed dummy for the NRA                     ...

   Fred Zeglin wildcat based on the Remington Ultra Mag case opened up to .458"

Developed by the late Horst Grillmayer and introduced at the 2010 IWA Show, it was another attempt to have a very hard hitting sub-sonic capable round with tactical application on an AR platform, in the same category as the 458 SOCOM/50 Beowulf/460 ALLIANCE and like...

     The .458 MCW Express was designed in 1953 by Harold E. MacFarland, Mervin Corbett Jr. and Fred F. Wells, all from Prescott, Arizona. It is based on the .375 H&H Magnum case and predates the introduction of the .458 Winchester Magnum and...

Developed by Jack Lott after a very bad encounter with a buffalo during a hunt in Mozambique with a 458 Win Mag, the 458 Lott is based on the 375 H&H case blown out straight and has evolved in one of the most versatile rifles for dangerous game in Africa. PMP...

   This is one of a range of cartridges that was designed by Ed Hubel and is based on the 450 NE 3¼” cases with a belt for strengthening the base.    

   Although very similar to the 458 SOCOM, the Ham’r was designed by Wilson Combat to exceed the ballistics of the SOCOM. It is powerful enough for any North American animal, but will also prove more than capable against vehicles and standard construction...

This was the (sort of) rimmed version of the 458 Express 3” above and was developed in 2008 for hunters who wanted a double rifle with the same ballistics. There used to be some rivalry between Prof. Badenhorst, the inventor of the 458 Express 3” and Ken Stewart who...

The 458 Express 3” dates from 1998 with the first rifles chambered in 2000. It was developed by South African hunter Prof. Koos Badenhorst, whom I knew well and had long conversations about the different 458 calibers Below is the text from the old website...

  Designed by the late Ken Stewart for a Zimbabwe hunting outfit. 69mm case length   

Huge case with heavily rebated rim. Still trying to find info on this.    

   Created by Australina Chris Boon, it is based on the 300 WSM case shortened and necked up.

This last specimen was made by Ken Stewart for a private client, but we do not have any indication who it was.  

     450 ASSEGAI PROOF stamped on case