22-243 WINCHESTER

   As soon as the 243 Winchester was launched in the 1950's and cheap brass became available, wildcatters began necking the 243 Win down to .22 cal. There are two major versions of the 22-243 Win. The first one is the standard 243 necked to .22 cal with no...

25-06 REMINGTON

The fist specimen is the normal/current headstamp used by PMP. It is the same for the normal PMP and ProAmm loads, as well as the relatively new Kalahari Elite, which is loaded with Swift Scirocco 100gr. bullet The second specimen with the blue base stripe is a normal...

25 TCU

   The .25 Ugalde / .25 Thompson/Center Ugalde, was developed by Wes Ugalde of Fallen, Nevada, about 1987. Like the other TCU cartridges, the .25 TCU is based on a necked-up and improved .223 Remington case. Original testing by Dean Grennell was described in...

22 VARMINTER

This is the predecessor to the 22-250 Remington. There was also an article in the Feb 1991 ECRA Journal that mentions the 22-250 Varminter in Australia as well. According to the notes it was "...Formed from the .250-300 Savage cartridge case by reducing the neck to...

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...