It was designed by Mark White of Sound Technologies, a US Class II manufacturer specializing in sound suppressors. The idea was that if you are going to use a subsonic cartridge, it might as well use the largest diameter projectile possible. “White has developed an...

info to follw   

info to follow (EB Ref: 477)                Box copy from RSA Newsletter 219 (#4 of 2016). Original from Martin Golland (UK). The hand written "Special Bullet" referred to the RN instead of the flat tip lead bullet...

info to follow (EB Ref: 476)   

The 510 GNR was developed by Gary Reeder from Rheeder Custom Guns, Flagstaff, AZ around 2004 and is based on the 500 Linebaugh case that was shortened by about 1/10th of an inch. It allows for the cartridge to be downloaded to about .500 Special ballistics and upward...

The 500 Wyoming Express was developed in 1995 for the Freedom Arms Model 83 revolver. It was a new design with a belted case and not based on any existing cases. The reason for the belted case was for the cartridge to headspace on the belt which would allow a heavier...

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The 500 Special is a shortened version of the 500 S&W Magnum and was launched after the 500 S&W was released. The idea behind the 500 S&W Special was an alternative cartridge for optimized reduced loads, much like the 38 Spl is to the 357 Magnum, or the 44...

Developed by Smith & Wesson in 2003 in the X-Frame Model 500 revolver the 500 S&W ranks as one of the most powerful handgun cartridges with almost the same muzzle energy than the .308 Winchester. The "LR" on the Hornady headstamp means large rifle primers used.

The Webley RIC (Royal Irish Constabulary) model was Webley's first double-action revolver, and adopted by the RIC in 1868, hence the name. It was a solid frame, gate-loaded revolver, originally chambered in .442 Webley, but very few were also loaded for the larger...

The 500 Maximum was developed by John Linebaugh in 2001 is sometimes called the 500 Linebaugh Long. The parent case is also the 348 Winchester, but the 50 Alaskan cases are more readily available to use. It is 0.2” longer than the ‘standard’ 500 Linebaugh....

The 500 Linebaugh was developed around 1988 by John Linebaugh as a companion to the 475 Linebaugh. It is based on the .348 Winchester case shortened to 1.41”

Developed by Jack R Huntington for use in the Freedom Arms Model 83 Revolver. It is basically a shortened version of the 500 S&W Magnum.   

Designed/developed by HWP INDUSTRIES, Milwaukee, WI circa 1989. Still looking for additional info on this.   

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The .50 Remington Navy was the successor to the M1865 rimfire cartridge. (EB Ref: 474)    The necked version is a half-charge blank.      

The Remington Rolling block action evolved from the earlier split breech design by a Remington employee named Leonard Geiger who patented his design in 1863. During the next few years this idea was further improved upon by Joseph Rider, who was the superintendent at...

The 50 GI was developed by George Zimmerman of Guncrafter Industries in 2002. It is a rebated round and retains the standard 45 ACP rim diameter but with a .50 cal case. GI offers custom conversions to standard 1911 and Glock models amongst others.   

I am still looking for information regarding this cartridge. The #9 shot load of the top specimen matches a cartridge (possibly SFM manufactured) that was listed in an old Buttweiler catalogue (RTB VI.3.250) designated as the .50 French Remington Pistol, but apart...

This was a development by Bryan Collison during the early to mid-2000’s to provide improved extraction in the Encore pistol over the .50 AE, using readily available components. The case is based on the .500 S&W Magnum trimmed to a maximum of 1.285". The same...

The 50 AE was designed around 1988 by Bob Olsen who owned ODL (Olsen Development Laboratory) together with Evan Whildin from Action Arms. The original barrels were done by Fred Wells, who developed the 510 Wells Express and the first cartridges were headstamped A.A.L....