American wildcatters began fiddling with the 6mm's after WW2. This is one of several versions that exist of these experiments and were popular with Bench Rest shooters. Based on the 250 Savage necked down, but differs from the Donaldson version as it retains the...
Cartridges
6mm INTERNATIONAL (DONALDSON VERSION)
Harvey Donaldson of Fultonville NY is regarded as one of the fathers of modern bench rest shooting. This is one of several versions based on the 250 Savage case. The Donaldson version has a ¼" shortened case with the shoulder pushed back.
6mm HAGAR
The 6mm HAGAR was derived from the 30 Remington and it has the same case head diameter as the 6.8 SPC, also a 30 Remington derivative. The cartridge was developed by John Harrison, a prominent match rifle shooter and Sid Goodling, a well-respected bench-rest gunsmith...
6mm GARIN
New line of 5 cartridges based on the 30 M1 case. From the website: The Garin SureStrike System is a complete line of five highly efficient and accurate cartridges designed for varmint, small game and target pursuits. Differing only by specific neck diameter and...
6mm GIPSON
6mm DASHER
The 6mm Dasher is an old wildcat caliber dating from 1999. During 2017, it was brought out by Norma as properly manufactured brass on the behest of American F Class shooter Shiraz Balolia, who has commissioned Norma to manufacture fully-formed 6mm Dasher brass, but it...
6mm CREEDMOOR
Relatively new, this is the 6.5 Creedmoor necked down to 6mm
6mm COMPETITION MATCH
Match cartridge based on the 243 Win case with a 30° shoulder
6mm CHEETAH Mk.1
Wildcat based on the Remington Bench Rest case
6mm CHEAP SHOT
Based on the 222 Remington Magnum case necked up to 6mm
6mm BEGGS
Wildcat by Gene Beggs of Odessa, TX on a modified 220 Russian case
6mm ACKLEY IMPROVED
6mm ATLAS
Based on the 7mm Rem Mag necked down to 6mm
6mm – 06
5.7 X 57 BELTED
Unknown belted round
5mm/35 SMC
25 CREEDMOOR
The 25 Creedmoor is basically the 6,5 Creedmoor necked down to accept .257in diameter bullets. It is supposed to fill the gap between the 6mm and 6.5 Creedmoor.
9mm CZECH OSTRYCH NABOJU
This is called the Czechoslovakian “9 mm cylindrical cartridge” or 9 mm ostrych naboju - valcovych made for the experimental ZB 47 SMG made by Zbrojovka Brno. The ZB-47, also known as the Samopal 47, was designed by Václav Holek in two variations. Ten guns were...
9 X 21 M-65 DANISH
It can be argued that this cartridge is nothing more than a longer case length 9mm Parabellum training blank used with a specially constricted barrel and deeper chamber preventing accidentaly firing live rounds as a live round would settle too far forward in the...
25 COPPERHEAD
222 Remington case necked up to .257"
22 MAYNARD Mod.1882 (22 EXTRA LONG)
22 MAYNARD Mod.1873
info to follow
25 BENCH REST
Based on the 6mm BR case necked up to .257"
9mm COLT MARS XPL
The original MARS (Mini Assault Rifle System) was based on a 5,56x30 round. The project started in 1997 when Colt was approached by Michael Harris of Special Analytical Services (SAS) with a concept of a mini-assault rifle that would have the purpose of being a...
22 LONG RIFLE CENTRE FIRE
200% view
9mm AUPO
This was a Fiocchi development during the 1980’s and was used in the Benelli CB M2 semi auto carbine. It is not a caseless cartridge, but a self-contained round as the powder is loaded inside the case with the “primer” located in a chamber the entire circumference of...
22 K-HORNET
The DWS headstamp is my own. I have a delightful little 22 K-Hornet built by the late Alex Wilhelmi on a BSA 300 Sherwood Martini action. Made up from fireformed Sako 22 Hornet cases. The other headstamp was also made by OPM in South Africa
22 HORNET
PROOF During WW2 there was a possibility that pilots could be shot down over some really inhospitable places. Early pilots carried personal handguns and rifles with them on long distance flights for protection. In WWI, pilots carried stripped down...
22 GARIN
New line of 5 cartridges based on the 30 M1 case. From the website: The Garin SureStrike System is a complete line of five highly efficient and accurate cartridges designed for varmint, small game and target pursuits. Differing only by specific neck diameter and...
22 DASHER
Bench rest cartridge based on the 6mm BR case, necked to .22 and the shoulder angle increased to 40°
22 CREEDMOOR
The 22 Creedmoor has been around since 2014 and is a necked down version of the 6.5 Creedmoor. It was specifically designed to handle heavier 22cal. bullets instead of just making a 22 cal. to see how fast it could go.
22 CHEETAH Mk. 1 (40°)
The 22 CHeetah was developed by Jim Carmichel, shooting editor of Outdoor Life magazine and Fred Huntington of RCBS fame. It appears to have originated in the late 1970's. The cartridge is essentially a full length Remington 308 BR case, with a smaller...
22 CCC
The .22 CCC is the same as the .22 PMVF (Powell-Miller Venturi Freebore). With the success of the early Weatherby’s in the 1940’s, Roy Weatherby received a lot of input from wildcatter R.W. Miller, who at that stage was loading the 300 Hoffman Magnum after it was...
22 BENCH REST REMINGTON
The .22 Bench Rest Remington, commonly referred to as the .22 BR Remington, is a wildcat cartridge commonly used in varmint hunting and benchrest shooting. It is based on the .308 x 1½ inch Barnes cartridge, necked down to .22 caliber, lengthened by .020...
22 BENCH REST
This is the 6mm BR case that was necked down to .22cal. It is not the same as the 22 REMINGTON BR that is based on the .308 x 1½ inch Barnes case
22 BEAST
This is the 6mm HAGAR necked down to .22" with no other changes
22 – 20 HARWOOD HORNET
Possibly one of the first wildcats ever made and dates from around the 1890's. It was developed by gunsmith Reuben Harwood and based on the 25-29 Single Shot case
219 ZIPPER ACKLEY IMPROVED
These are found in different versions and configurations. This is the Ackley version with straight case walls and sharper shoulder.
219 ZIPPER
The 219 Zipper is based on the 25 -35 Wichester necked down to .22cal. Winchester took the very popular M94 rifle during the early 1920’s and dicided to modernize it, bringing out the Model 55, and in 1933 changed again to the Model 64 rifle. The early thirties was a...
8 X 50R AUSTRIAN MANNLICHER
This is also a relatively large project, new specimens will be added soon - During the late 1870’s and into the 1880’s there were giant technological strides made in the development of small arms ammunition. It was without a doubt that one of the front-runners in this...
219 DONALDSON WASP
The .219 Donaldson Wasp cartridge was developed during the late 1930s by Harvey Donaldson, and is derived from the .219 Zipper case. Once popular amongst match shooters in the 1940s it has since fallen by the wayside in favor of newer developments. It is however held...
8mm RIBEYROLLES
The French began experimenting with semi-automatic rifles as far back as the 1890’s with the testing of the Meunier rifle and by 1900 they were considering the replacement of their bolt action rifles with semi-automatic rifles, but budget constraints and bureaucracy...
218 BEE
8mm BRIXIA MORTAR IGNITER
The Brixia Modello 35 was a light infantry mortar to provide indirect fire support against enemy positions at platoon level and was based on a 45mm light fragmentation projectile weighing 16.4 ounces (465 grams) and able to reach target areas out to about 580 yards...
204 RUGER
Launched in 2004, The 204 Ruger was a joint development by Hornady and Ruger. It is based on the 222 Rem Mag case necked to .204”, with the shoulder mover forward and changed to 30º Using the 222 Rem Mag case instead of the 223 case, the 204 Ruger provides about 5%...
204 JB
20 VAR TARG TURBO
Wildcat designed by Todd Kindler, based on the 222 Remington that was shortened and given some Ackley treatment. VAR = Varmint, TARG = Target
20 TERMINATOR
Based on the 222 REM MAG case, necked to .20 cal with sharper shoulder
20 TACTICAL
Designed by Todd Kindler and is a 20-cal cartridge based on the .223 Remington necked down to 20 Caliber, with the shoulder modified to 30° and pushed back. The 2 logos are DAKOTA ARMS and LAPUA
20 PPC
Match cartridge based on the 22 PPC necked down
