243 ROCKCHUCKER

   257 Roberts necked down to 6mm/.243 cal (which is basically what the 6mm Remington is), however the 243 RC predates the 6mm Remington and the only difference is on the shoulder angle. Most shooters prefer the 6mm Remington because of the availability of...

24 NOSLER

The 24 Nosler was designed by Mike Lake, who is the Senior Manager of Engineering and R&D at Nosler. He was also responsible for the development of the 26 Nosler (2013), 28 Nosler (2015), 30 Nosler (2016), and the 33 Nosler (2017), all of which are based on the...

228 ACKLEY MAGNUM

   The original version of the 228 Ackley Magnum was developed by P.O. Ackley in 1938, although the idea came from around 1936 and was one of his first wildcat designs. He was looking for a better version high velocity .22 cal. rifle and his design is based...

224 VALKYRIE

This is a new development by Federal that was introduced in December 2017 as a definitive cartridge for the AR based platform. The 22 Nosler provided about a 25% improvement in velocity and 30% in energy over the existing 5.56 NATO round when it was introduced in...

223 SCORPION

   Based on the .30M1 case and resembles a 5.7mm MMJ, but with a more gentle shoulder. According to Dan Watters on THE GUN ZONE, the 223 Scorpion was the brainchild of Californian gunsmith Ken Bucklin way back in 1945. The above specimen is a recent remake...

222 REMINGTON

Reworked 5.56 cases and loaded by Ordnance Developments Ltd., Lowe Hutt, New Zealand for the New Zealand Forest Service. The Herters case with the dots on both sides were produced in Sweden by both Svenska Metallverken (often with SM primer) and later Norma...

22-250 REMINGTON

The 22-250 cartridge has a long and rich history with century-old roots, and the fact that it remains popular today bears witness to its fine design – and a bit of good fortune. Way back in 1915, the 250 Savage made its appearance on the shooting scene. Designed by...

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...