The .550 Magnum was developed by Neal Shirley from Yuma, AZ and is based on a 460 Weatherby case necked up to .550”. There was a write-up of the 550 Magnum in the March/April 2020 edition of African Outfitter Magazine.
Cartridges
550 EXPRESS
The 550 Express is the shortened version of the 550 Magnum that was developed by Neal Shirley of Yuma, AZ and is based on the 460 Weatherby case that was shortened to fit in a standard Mauser action.
54 U.S MODEL 1841 “MISSISSIPI” RIFLE
54 PAPERCASE
530 WOODLEIGH MAGNUM
505 – 530 WOODLEIGH
52–70 SHARPS 1¾”
300 WEATHERBY MAGNUM
Speer
300 SAVAGE
300 RUGER COMPACT MAGNUM
300 REMINGTON ULTRA MAG
The .300 Remington Ultra Magnum made its debut in 1999, followed by the 7mm Remington Ultra Magnum and in 2002 the .338 & .375 Remington Ultra Magnum were introduced. The Remington Ultra Magnums, joined an increasingly popular trend toward beltless,...
300 REMINGTON SHORT ACTION ULTRA MAG
300 PRC
The 300 PRC was developed by Joe Thielen, who was the assistant director of engineering at Hornady when the 375 Ruger was launched in 2007. It is based on the 375 Ruger necked down with the shoulder moved slightly back and was originally called the 30-375 Ruger. The...
300 PHOENIX
The 300 Phoenix is a proprietary cartridge developed by G. McMillan & Co. of Phoenix, Arizona, USA, in 1991. This cartridge is based on the 416 Rigby case necked down to 308 caliber.
300 PFEIFER MAGNUM
300 PEGASUS
The 300 Pegasus was developed during 1994 in an attempt to push .30 cal bullets past 3,500 fps. The head is basically the same as for the 378 Weatherby, but without the belt.
300 OLYMPIC SUPER SHORT MAGNUM
300 JARRETT
8mm Rem Mag case necked to .30 cal with a 35° shoulder. You can have a look at the website HERE
300 IMPERIAL MAGNUM
In the early 1980s Aubrey White and Noburo Uno of North American Shooting Systems (NASS) based in British Columbia Canada began experimenting with the full length .404 Jeffery by reducing the taper and necking it down to various calibers such...
300 ICL GRIZZLY
510 WHISPER
Developed by SSK Industries, the .510 Whisper is a subsonic cartridge based on the 338 Lapua cut down to 1,875 inches.
510 WELLS EXPRESS
510 SNIPE-TAC
Based on the 505 Gibbs case, the idea is to have a very hard hitting .50cal that can be used with subsonic loads.
510 BEECHER MAGNUM
510 BEECHER EXPRESS
510 AFRICA IMPERIAL MAGNUM
505-460 KEMP
Developed by Stan Kemp ca 2005 and based on the 460 Weatherby case cut off at the shoulder and opened to .505"
505/404 RIMLESS
25 IHMSA
9 X 33 TRAINER FOR 112mm APILAS ROCKET
Training cartridge for the 112mm APILAS (Armor-Piercing Infantry Light Arm System) that was developed by GIAT during the late 1970’s as a response to a request for proposals from the French armed forces for a new recoilless infantry anti-tank weapon. The 112mm APILAS...
22 ORESKY
One of the line of .22cal cartridges based on the 30 M1 Carbine case.
300 HOWELL
300 HOLLAND & HOLLAND MAGNUM
Designed by the British firm Holland & Holland, the .300 H&H Magnum was introduced in 1925, based on the .375 H&H magnum case necked down to .30 caliber. Different versions with and without primer crimp ...
300 HOFFMAN MAGNUM
300 HEAVY EXPRESS SHORT ACTION MAGNUM
300 HEAVY EXPRESS MAGNUM
300 HAWK
300 HAM’R
The 300 Ham’r was developed by Bill Wilson from Wilson Tactical to provide a cartridge that could work through a standard AR15 but with the terminal performance of the 30-30 Winchester. The original design for this cartridge was also called the 30-30AR with the case...
300 GONZO II
300 DAKOTA
300 CARIBOU
300 CANADIAN MAGNUM
300 BLACKOUT
The history of the 300 Blackout sometimes seems confusing, so it would make sense to take a trip into the past and get the detail on this interesting cartridge. Judging also by the sheer number of headstamps and variations available, it remains a fascinating...
505 EMPIRE
505 BARNES SUPREME
500 WHISPER SHORT
500 WHISPER
500 WEATHERBY MAGNUM
500 MDM ULTRA
500 MBOGO
The 500 Mbogo was developed by Ronald A. Berry M.D. Ron has developed about 2 dozen different wildcats, but only two have been loaded as proprietary loadings, namely this one and the 395 Tatanka.
