The 338 Headhunter is the longer case version of the 338 Razor and was designed by Alaskan ELR shooter Pro Martusheff, owner of Precision Rifled Ordnance who goes by the internet name of Swamplord. The Headhunter was designed as a single shot precision rifle to...

   Based on the 405 Win case necked to .338

Long range match cartridge based on an improved 8mm Rem Mag, necked to .338   

   The .338 Federal is .308 Winchester case necked up to .33 caliber. It was created by Federal Cartridge and Sako in 2006 and intended as a big game cartridge with reasonable recoil for lightweight rifles.

   The .338 Excaliber was introduced in 1994 by the A-Square company. The .338 Excaliber is based on a standard (not belted) rimless bottleneck case with the same rim diameter as the .378 Weatherby, but slightly greater powder capacity than the .338 A-Square...

The .338 Edge was designed by former SWAT/Narcotics officer Shawn Carlock in 2001 and was released after Remington brought out the 300 Remington Ultra Mag, but before the introduction of the 338 Ultra Mag. The 338 Edge is thus effectively a 338/300 RUM wildcat. With...

      Replica The 338 Dakota Short Magnum is a cartridge that saw the light at roughly the same time as the 423 Lapua in 2005 and apparently both were tested on a hunt in Tanzania. The 423 Lapua went on to be produced commercially as a joint...

Still looking for info on this cartridge, but it looks as if it is based on a shortened Chey-Tac case. Cases are by RCC Brass.    

   Ronald Brian McDaniels founded Black Mesa Rifle Company in Kenton, Oklahoma around 1992. The 338 Black Mesa was the second after the introduction of the 375 Black Mesa Express around 1993. Named after the Black Mesa, the highest point in Oklahoma.

   Created by Joel Russo and Bruce Baer based on the 408 Chey Tac case

Based on the 404 Jeffery case and named after Walter Abe, who was a rifle maker and originally developed another 338 wildcat, namely the 338 A&H (Abe and Harris). The idea was to get the most effective 338 cal cartridge from a non-belted case to use on a magnum...

The 33 XC (eXtra Capacity) was developed by David Tubb, multiple champion in ELR (Extended Long Range) shooting. It is also the parent case for the 37XC and the 41XC. The idea was to have a cartridge for ELR shooting that had the ballistics of a 338 Lapua Improved,...

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The largest of the Nosler line of cartridges and was introduced in 2016.   

Also known as the 8mm-08. This is a 308 Win case necked up to 8mm. The idea is however more than a hundred years old. Mauser had the 8 X 51 M88H MAUSER KURZ in their line-up long ago.   

Slightly longer (1.88") case than the Maynard case, but apart from that it is virtually the same      

Easily confused with Stevens cases, however the Maynard cases are between 1.84" to 1.86" long. The Maynard cases were all manufactured by the Massachusets Arms Company and were all without headstamp.

The 3200 HAWK was designed by Bob Fulton around 1988 and is one of a series of cartridges that he designed based on the 280 Remington case. The idea was to have a lighter rifle with manageable recoil but still be able to handle everything in North America....

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