338-378 KT

The 338-378 KT was designed by Elmer Keith and Bob Thompson in the 1960's as a long range elk cartridge to be used with slower burning powders available at that time. They kept the Weatherby double radius shoulder but shortened the case 1/4" to better suit case...

338 SPECTRE

      Like the .458 SOCOM, the .338 Spectre cartridge was developed specifically for the AR-15 family of gas-operated, detachable-box magazine-fed firearms. The cartridge is intended to fill the gap between traditional pistol caliber cartridges and...

338 RAZOR

The 338 Razor is another cartridge designed by Alaskan ELR shooter Pro Martusheff (aka Swamplord) from Precision Rifled Ordnance. It is the shorter case version of the 338 Headhunter built specifically for Remington 700 and Winchester Model 70 actions. The case is...

338 HEADHUNTER

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...

338 EXCALIBUR

   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...

338 EDGE

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...