6.35 X 48 GP80 SWISS EXPERIMENTAL
Pressure Test with Copper washed brass case. info to follow
36 CRISPIN
under construction
6.25 X 43 BRITISH
A British experimental cartridge designed during the early 1970s, using the .280/30 as a parent case, which was necked down to fit a smaller bullet
45 ROSS
The 45 Ross was made by U.M.C. circa 1903, It is estimated that probably only 50 rounds made for Sir Charles Ross (Ross Rifle Co.) of Canada for his pistol design This is a very rare Ross automatic pistol, patented in 1903 by Charles Ross, of the Ross...
6mm MANNLICHER M.96
This was an experimental Mannlicher development. See also MOTZ P73-4 p. 173
6mm LUGER
The 1895 US Navy Small Arms Report state that there was a Luger rifle submitted for tests with a case capacity that was slightly larger than the .236 US Navy round the rifle an improved Mauser design. The Bureau of Ordinance, US Navy also state that these cases were...
222 REMINGTON MAGNUM
The .222 Remington Magnum was a short-lived commercially produced cartridge derived from the .222 Remington. Originally developed for a US military prototype Armalite AR-15 rifle in 1958, the cartridge was not adopted by the military, but was introduced commercially...
6mm EXPERIMENTAL BALL CARTRIDGE AMU
This loading is similar to the 6mm Ball International Match but was reportedly loaded in 1979 – 1980 by the Advanced Marksmanship Unit (AMU) for testing by the US Secret Service. This is the same cartridge as Fig. 824 in HWS 3 p.552
6mm BALL INTERNATIONAL MATCH AMU
The 6mm Ball International Match Cartridge was a Remington development in July 1960 and was based on the 250 Savage case necked to 6mm. At the same time the Advanced Marksmanship Unit (AMU) at Fort Benning developed a similar cartridge but with the neck moved slightly...
45 REMINGTON
There is not much information available about the 45 Remington. According to Erlmeier, Brandt a Remington Falling block Pistol was shown at the 1873 International Expo in Vienna that was chambered for a bottlenecked cartridge. (Erlmeier, Brandt Ref. 436).
6 X 51 RSA PROOF
Although not technically a specific "experimental" cartridge, this was used for barrel tests at Armscor during the early 1970's
6 X 50 SAW LONG
The aluminum case was first designed using the same dimensions as the Brass/steel case 6x45 SAW versions and later redesigned and manufactured with a lengthened body to accommodate a silicone Flexible Internal Element (FIE) to prevent burn through but still provide...
6 X 49 NIKONOV
Russian experimental design dating from the 1990’s at TSNII TochMash in the city of Klimovsk, located near Moscow, which is a Government-owned research and manufacturing organization responsible for small arms and ammunition development and named after Gennady Nikonov...
6 X 45 SAW (Squad Automatic Weapon)
...
6 X 45 SOUTH AFRICAN XPL
PROOF Load This, together with the 6x39 experimental was an attempt by the SADF during the mid 1970's to develop small arms ammunition for local conditions. The 6x45 version used imported 5.56 NATO cases and components, but the 6mm...
6 X 45 BRUNSWICK CORP. SAW
An independant venture by the Brunswick Corporation in an attempt to get in on the SAWS (Squad Automatic Weapons System) project that was done at Frankford Arsenal in the early 1970's. Used commercial soft nose bullets and were slightly...
6 X 44 SPECIAL CASE (Pre-SAW)
The following is from the International Cartridge Collector. No. 289-290 (Jan-Feb 1980) p.4 SQUAD AUTOMATIC WEAPON (SAW) CARTRIDGE DEVELOPMENT AT FRANKFORD ARSENAL (1971-1972) COMPILED BY WOODIN LABORATORY During July 1971 a computerized parametric design...
6 X 39 SOUTH AFRICAN XPL
During the mid 1970's South Africa did some developments regarding smaller caliber ammunition. A lot of these experiments were based on the 7.62x39 case. This project involved the case being necked down to 6mm. Cases used were by Russian Factory 270 which is the...
250 SAVAGE
358 YUKON
The 358 Yukon is based on the 300 Remington Ultra Magnum case shortened to 2.56" and was designed to function in standard length bolt actions.
22 CARBINE
Development started in 1951 for use in the SCHV or Small Caliber High Velocity programme conducted at Aberdeen Proving Ground. The first specimen used a 30 Carbine case loaded with a commercial bullet. The second specimen used a modified 222 Remington case. It was the...
18 HOMOLOGOUS (PROJECT SALVO)
Ballistics Research Lab at Aberdeen Proving Grounds prepared a study entitled "An Effectiveness Study of the Infantry Rifle" early in 1952. Small Caliber High Velocity (SCHV) rounds were developed with the idea in mind that lightweight projectiles fired...
17/223 FA-T 210 (AMA 4.32×45) (SBR)
Dummy loading with brass case, GMCS bullet and blackened primer. Case filling is an inert salt to simulate the correct weight. The US Army instituted the Serial Bullet Rifle (SBR) Program in 1965 in an attempt to develop a high velocity, low recoil...
17/222 FRANKFORT ARSENAL EXPERIMENTAL
Assumed to be part of the Cal .17 development program. This is one of the cases from probably the late 60’s that were found at Frankfort Arsenal in a commercial 222 REM 20 round box. There is no other info available as to the exact tests these were used in....
17/221 IMP
In the late 1960’s the Air Force Armament Laboratory began work on an improved aircrew survival weapon designed to be lethal yet small and lightweight. Colt Industries was given a contract to develop a weapon using the ’stockless rifle’ concept. The...
17 DARDICK TRIPLEX
Experimental triplex round from Dardick during the 1950’s to early 1960’s. The idea was to increase hit probability with a three round burst.
14 FRANKFORD ARSENAL XPL (3.5 X 43)
Frankford Arsenal development during the early 1970’s during their work into “micro-caliber” rounds. It consisted of research into wound ballistics and testing was done at Aberdeen Proving Grounds and at Edgemoore. Various projectiles were tested.
358 WINCHESTER
Two years before the adoption of the 7.62 NATO in 1954 Winchester had already applied for and received the rights to market the new round commercially as the 308 Winchester which turned out to be one of Winchester’s success stories, Shortly afterwards in 1953 they...
250 HEAVY EXPRESS SHORT ACTION MAGNUM
- info to follow -
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...
45 MAXIM PISTOL
This is a British design that has caused a lot of confusion over the years as to exactly what the 45 MP meant. It is now generally accepted that the correct name for this cartridge is the 45 Maxim Pistol and is based on the Nov 1885 patent design revolver by Hiram...
358 SHOOTING TIMES ALASKAN
The 358 STA dates from 1992 and was designed by gun writer Layne Simpson and is based on the 8mm Remington Magnum necked up to .358cal. but less body taper than the 8mm Rem Mag cartridge as well as a sharper 35° shoulder.
9.53mm MULTIPLE FLECHETTE CARTRIDGE
This was a Winchester development contract for a design study of a multiple flechette rifle system from Frankford Arsenal during 1968. Winchester had already done in-house ballistic studies during 1962 with a 10mm case version based on modified 30-06 cases and used...
220 WEATHERBY ROCKET
Modern reproduction for collectors by OPM in South Africa
358 SCOVILL
under construction
6 X 35mm TSWG
TSWG = Technical Support Working Group. The Knight's Armament Company 6×35mm PDW is an experimental personal defense weapon designed by Knight's Armament Company (KAC), firing a 6mm cartridge optimized for short barrel weapons. As with all personal...
25-264 WINCHESTER
Sort of an improved version of the 264 Win Mag, necked to .25 cal.
45 H.P.
The 45 HP is also known as the 45 Auto Short, having a case that is 1mm shorter than a standard 45 ACP. It was developed because of restrictive rules on shooters in many countries making it illegal for civilians to own semi-automatic pistols in military chamberings...
358 JDJ
The 358 JDJ was designed by JD Jones of SSK Industries and is based on the 444 Marlin case.
9.5 X 60R TURKISH MAUSER
The latter part of the 19th Century was one of profound political change throughout Europe and it had a direct impact on military decision making. One must remember that it was an era before mass communication on the one hand and giant technological strides being made...
220 SWIFT
The .220 Swift was developed by Winchester and introduced in 1935. It was the first factory loaded rifle cartridge with a muzzle velocity of over 4,000 ft/s (1,200 m/s).[
358 HOOSIER
This is effectively a shortened 358 Winchester in order to comply with Indiana hunting regulation that limit the length of the cartridge to 1.800"
25-45 SHARPS
45 GLOCK AUTO PISTOL
The 45 GAP was developed by Ernest Durham, of CCI/Speer in November 2002 at the request of GLOCK to have a cartridge that’s the same overall length as a 9x19mm cartridge, but be equal in power to a .45 ACP cartridge. It is offered in the Glock 37 pistol and is used by...
9.3 X 64 KALTMANN
This was in all probability used for ballistic testing for the 9mm Kaltmann. Bullet shown here at 400% view. The opaque sabot is fixed to...
358 HAWK
The 358 Hawk is one of a series of 11 cartridges designed by Bob Fulton and Fred Zeglin during the late 80’s. The .358 is based on the 30-06 case necked up to .358 in.
220 HOWELL
358 ENTERKIN MAGNUM
One of two cartridge designs (the other being the 375 Enterkin) and was the brainchild of the late Col. Lawrence Gene Enterkin during the late 1960’s who used to own the Powder Horn gun shop in Cusetta GA. The 358 Enterkin is based on the 300 Weatherby case necked up...
25-36 MARLIN
45 FRANCOTTE VERSUCH
This was a Belgian experimental dating from 1920-1930. Cartridge had an internal extraction groove. Still trying to find additional info. (Erlmeier, Brandt Ref. 434A).