Made by shortening and necking down the 375 H&H Modern loading by Wolfgang Romey PROOF Load
Cartridges
275 JEFFERY ROOK RIFLE (J.275)
275 №.2 MAGNUM (7MM RIGBY FLANGED MAG)
Developed by Rigby ca 1927 by necking down the 375 2¼" Flanged. This cartridge is similiar to the 7mm Holland Flanged Magnum, but with thicker rim.
275 RIGBY
Proprietary loadings of the 7x57 Mauser This is the box for the KYNOCH 7 M.M cartridge OPM South Africa Cases by Horneber in Germany for Pieter Becker, the South African agent for Horneber ...
275/240 RIMLESS EXPERIMENTAL
This cartridge is also known as the .270/245 Holland & Holland Rimless Magnum. There are not many references to it, one being Robert T. Buttweiler's auction catalog XII-3-352. It was developed by David Lloyd in 1952 (Box date - 15 OA, which translates to...
276 BARNES-JOHNSON EXPRESS
276 BRITISH XPL LAIRD-MENTAINE
This cartridge was based on a patent that was taken out by two French designers in 1908, namely Mentaine and Degaille with some input from Laird, a British engineer who appears to have been responsible for the production of the rifle at Coventry Ordnance Works, a...
276 PATTERN 13 ENFIELD
As early as 1908, the Chief Superintendent of Ordinance Factories in Britain recommended to the Director of Artillery that .256 inch caliber ammunition to a new design should be made up for trail to gain experience with high velocity rimless cased ammunition. These...
276 PEDERSEN
JD Pedersen started the development of his cartridge in 1923 at Springfield Armory. The first rifles were made in 1925, so test barrels were used in the beginning. There were a number of changes to the case as well as many different bullets were tested. The first case...
277 ICL FLYING SAUCER
The ICL cartridges used the same minimum body taper like the Ackley Improved versions but instead of a 28 or 40 degree shoulder (Ackley) the ICL used a 45 degree shoulder.
277 SIG FURY
For a time now the US Army has been searching for a Next Generation Squad Weapon System and during 2018 it supplied the specifications of what type of system they were looking for and invited the firearms industry to come up with the designs for a Squad Infantry Rifle...
277 SMITH
277 WOLVERINE
The 277 was developed by Mad Dog Shooting Systems and is based on the 5.56 NATO case necked up to 6.8mm. Any existing AR platform can be used with just a barrel change. The 277 Wolverine is basically a hybrid cartridge between the 5.56 NATO, 6.8mm SPC, 300 Blackout...
28 1,000-Yard DANGER SPACE
Experimental cartridge from around 1910 in order to produce a cartridge that would give a continuous 1,000 yard danger space (not rising above the height of a man standing on level ground)
28 1,000-Yard DANGER SPACE (28 XPL BALL)
This is the version from 1913, with a larger capacity case.
28 Cal. US XPL
The notes I have with this cartridge states that it was originally from Bill Woodin via the collection of the late Peter Skala. It has been floating around in the unidentified tray for a long time and I have not been able to find any info either in the ECRA Database...
28 NOSLER
The 28 Nosler was developed as a companion to the 26 Nosler that was launched earlier and is intended to be one the most powerful 7mm loads offered commercially. It shared the same case and overall length than the 26 Nosler.
28 ROSS (280 ROOSEVELT)
Manufactured for Sir Charles Ross in 1906 by Eley. It was replaced by the larger 280 ROSS, which is a semi-rimmed cartridge. The 28 Ross is also known as the 280 Roosevelt because specimens of this cartridge were found in the estate of Theodore Roosevelt.
28 WINCHESTER CENTER FIRE
Replica made for collectors by OPM in South Africa. The originals of this are extremely rare. Dating from around 1912, it was produced by Winchester but it is uncertain if it was officially tested. It is a 30-06 necked down to .28. also known without a...
28-30-120 STEVENS
The 28-30-120 was designed by Charles H. Herrick for the Stevens Company around 1900 in answer to a demand for a cartridge a little more powerful than the .25-caliber cartridges, but not quite as large as the .32-40, so that it could be used satisfactorily for deer,...
280 ENFIELD
At the end of WW2 the British were one of the few major powers to not have a self-loading rifle in service. They were still using the .303 British No. 4 Lee Enfield dating from the late 19th century. Combat experience during both world wars questioned the need for...
280 FRANKFORD ARSENAL EXPERIMENTAL
In 1951, tests were done at Frankford Arsenal with British .280 cal bullets that were supplied by ROF Radway Green using Cal .30 Light Rifle FAT 1E1 cases necked down to verify the performance of the British bullets. The first specimen was loaded with the 140gr....
280 ROSS (RIMLESS)
Semi-rimmed cartridge introduced in 1906 by Sir Charles Ross for his bolt action sporting rifles. It was a very popular cartridge and was the basis that Hermann Gehrlich used for the development of the 280 HALGER. Huntingdon Die Services, USA Ross Rifle Co. Canada...
280 ACKLEY IMPROVED
280 DUBIEL
The 280 Dubiel was developed by John Dubiel and was formed by necking down the 300 Holland & Holland.
280 FLANGED 2 ⅝” (LANCASTER)
This is the rimmed counterpart of the 280 Ross, by Charles Lancaster. Snapcap
280 HALGER MAGNUM (7.1×66)
...
280 HALGER ULTRA HV
280 HALGER ULTRA II
Very rare Gerlich taper-bore experimental designated .280 Halger Ultra II. It was developed during 1934 by the Halger firm from Otterup, Denmark. The designation refers to the final diameter of the bullet. Initial bullet diameter was 10,7 mm. These were also...
280 HAWK
280 JEFFERY RIMLESS NITRO EXPRESS (33/280)
Developed by WJ Jefferey & Co around 1915 and is based on the 333 Jefferey case necked down. Proof
280 RCBS
The 280 RCBS is basically the Fred Huntington version of the 280 Ackley Improved, but with a 30° shoulder, whereas the 280 Ackley has a 40° shoulder.
280 REMINGTON (7mm EXPRESS REM)
The 280 Remington was introduced in 1957 and is based on a 30-06 case necked to .284" and the shoulder moved a fraction forward. In 1979 Remington renamed the cartridge to the 7mm Express Remington, which was exactly the same cartridge with updated factory loads. It...
280 WESTLEY RICHARDS (REBATED RIM)
Normal 280 ROSS case but with the rim turned down to fit the standard M88 Mauser bolt face.
280/30 BRITISH (7×43)
280/30 FN FAL Rifle The following is an excellent article taken from historyofwar.org: (Antill, P. (29 July 2009), The EM-2 (Rifle No. 9, Mk 1): Britain's Original Bullpup Rifle, http://www.historyofwar.org/articles/weapons_EM-2_rifle.html) Background At the end of...
284 HEAVY EXPRESS MAGNUM
284 HEAVY EXPRESS SHORT ACTION MAGNUM
284 WINCHESTER
Below is a longer case version of the 284 Winchester. I am still looking for info on it
284-30 FOURNIER (8×55)
288 BARNES SUPREME
297/230 LANCASTER SPORTING
The Lancaster was an early development for sub-caliber practice. It has a copper case with battery cup Boxer style primer. Was loaded with 3,0gr. black powder with a 30gr. round nosed lead bullet. It was in all probability replaced by the 297/230 Morris...
297/230 MORRIS LONG
This is a longer necked version of the 297/230 Morris Short
297/230 MORRIS SHORT
The 297/230 Morris Short dates from the mid 1880's and was developed as a sub caliber training cartridge in auxiliary barrels used in the 577/450 Martini Henry. It was also later adapted for use in the 303 Lee-Enfield/Metford rifles as well as in revolvers. It...
297/250 ROOK RIFLE
This is the 297/230 Morris Long cartridge necked up to .250''
298 MINEX (WR) 1 ⅜”
This is the 298 Westley Richards Miniature Express, that Westley Richards listed in their 1909 catalogue for sigle shot bolt action rifles.
3.5 X 51 FN EXPERIMENTAL
Experimental cartridge dating from the early 1970's when the search was on to find an improved assault rifle. One school of thought was smaller diameter, lighter and faster bullets. This 3.5mm version was an intermediate design by FN in...
30 ADOLPH
30 AMERICAN
30 BALL DUPLEX (PROJECT SALVO)
These cartridges used a Cal. 30 Service Case (30-06) with spitser type bullet for use in the SALVO field trials. Some loadings have the rear bullet with longitudinal grooves to allow for the propellant gasses to ignite a 2 grain charge between the 2 bullets to obtain...
30 BENCH REST
Based on the 7mm BR case necked to .30cal.