Introduced by George Gibbs in 1911 OPM South Africa Hand stamped, probably by Stewart
Cartridges
505-460 KEMP
Developed by Stan Kemp ca 2005 and based on the 460 Weatherby case cut off at the shoulder and opened to .505"
505/404 RIMLESS
510 AFRICA IMPERIAL MAGNUM
510 BEECHER EXPRESS
510 BEECHER MAGNUM
510 DTC EUROP
The .510 DTC EUROP is a French design developed by Eric Danis, owner of Dan Tec France in 2000 in order to comply with firearms legislation of .50 BMG rifles in Europe. In response to the .50 Caliber BMG Regulation Act of 2004, which banned future sales of .50 BMG...
510 GNR
The 510 GNR was developed by Gary Reeder from Rheeder Custom Guns, Flagstaff, AZ around 2004 and is based on the 500 Linebaugh case that was shortened by about 1/10th of an inch. It allows for the cartridge to be downloaded to about .500 Special ballistics and upward...
510 SNIPE-TAC
Based on the 505 Gibbs case, the idea is to have a very hard hitting .50cal that can be used with subsonic loads.
510 WELLS EXPRESS
510 WHISPER
Developed by SSK Industries, the .510 Whisper is a subsonic cartridge based on the 338 Lapua cut down to 1,875 inches.
52 SHARPS LINEN CASE
Christian Sharps produced his first single shot, .54 caliber breech loading rifle using paper cartridges in the late 1840's. Later the cartridges were made of linen. The falling block, dropped by lowering the trigger guard, cut off the end of the cartridge when the...
52–70 SHARPS 1¾”
530 WOODLEIGH MAGNUM
54 BURNSIDE
The .54 Burnside carbine was designed and patented by Ambrose E. Burnside in 1855 and was manufactured in Rhode Island by the Bristol Firearms Company which later became the Burnside Rifle Company. It was the third most widely used carbine by the Union cavalry,...
54 PAPERCASE
54 U.S MODEL 1841 “MISSISSIPI” RIFLE
55 BOYS ANTI TANK RIFLE
The 55 Boys was named in honour of Captain H. C. Boys during the late-1930s as an infantry anti-tank rifle, which at that time was still relatively lightly armored. It was an upgrade from the earlier .5" Stanchion rifle. Designated “Rifle, Anti-Tank, .55in, Boys” for...
550 EXPRESS
550 MAGNUM
Developed by Neal Shirley from custombrassandbullets.com- Yuma, AZ. You can find more info HERE
56 BILLINGHURST REQUA VOLLEY GUN
The Billinghurst-Requa battery gun predates the Gatling Gun and for this reason it is considered to be the first practical machine gun used in the American Civil War. Dr. Josephus Requa, a dentist from New York who from 1849 to 1853 served an apprenticeship in the...
575 MILLER & GREISS MAGNUM
Based on a 1958 diagram by Steven Ickes shown in the ICCA bulletin no 347 of 1989. It is based on a .50 Browning case. It was produced for the cartridge collectors market as a reproduction by OPM in South Africa.
577 1½” DRAWN BLACK POWDER
Same as the specimen on p. 147 of Fleming, this was probably interchangeable with the 577 Snider
577 2 ½” COILED
Standard iron base disk riveted to the base cup and case by a hollow primer pocket crimped on both ends.
577 2 ½” DRAWN BLACK POWDER EXPRESS
Drawn case version of the 2 ½" coiled case. These were early loads but was replaced by the longer versions.
577 2 ¾” COILED BLACK POWDER
Early load with this case length and also progressed to a drawn case and eventually a Nitro for Black Powder load. The first full specimen is a board dummy. The bullet is held by a small steel pin.
577 2 ¾” DRAWN BLACK POWDER EXPRESS
577 2 ¾” NITRO EXPRESS
This second version is a proof load. The double "C" on the first specimen denotes a full cordite load as opposed to "LC" or Light Cordite on the Nitro for BP version. The dummy cartridge with empty red primer pocket is by Kynamco. ...
577 2 ¾” NITRO FOR BLACK POWDER
Third specimen is loaded with a lead ball, probably a gallery/shorter range load, The next one has a Jacob's tube or explosive cap fitted. The first as well as the last specimen both have a steel cap.
577 3″ DRAWN BLACK POWDER EXPRESS
This was the most popular case length in .577
577 3″ NITRO EXPRESS
Hand made case with a very "blunt" lead bullet
577 3″ NITRO FOR BLACK POWDER
577 3¼” BLACK POWDER EXPRESS
Shown until the 1903 Kynoch catalogue, but not after that. Rifles were offered up to about 1925.
577 3¼” NITRO EXPRESS
577 3¼” NITRO FOR BLACK POWDER
577 2″ COILED
577 3¼” COILED BLACK POWDER
Early version of the longer case 577
577 BOXER
info to follow (EB Ref: 476)
577 HOWDAH JURRAS
One of a series of cartridges designed by the Late Lee Jurras, one of the greats in handgun hunting. He was very interested in the exploits of the old hunters with their Howdah pistols and in the early 1970’s brought out his own versions chambered in 6 different...
577 HOWDAH JURRAS
577 PISTOL
info to follw
577 REVOLVER
info to follow (EB Ref: 477) Box copy from RSA Newsletter 219 (#4 of 2016). Original from Martin Golland (UK). The hand written "Special Bullet" referred to the RN instead of the flat tip lead bullet...
577 REWA (HOLLAND’S 600/577)
Based on the 600 Nitro necked to 577 and was made for His Highness Martand Singh, the Maharajah of Rewa around 1929. The last specimen is from the Imperial box with the 750gr. RN.
577 SNIDER
This is a relatively large project and I will be adding history and info in time. SOUTH AFRICAN VARIATIONS H Grönebaum, a local South African shooter. Paper cased cartridge and printed on the side is "JOHANNESBURG SOUTH AFRICA"
577 TYRANNOSAUR
577/450 GREENER (2 ¾”)
This was an experimental multi-ball load, probably by W.W Greener, based on the 577 2 ¾" case. 3 lead bullets were nestled on top of each other and the bottom one would have been held in place by stab crimps on the juncture of the neck and shoulder. The first specimen...
577/500 3 1/8″ BLACK POWDER EXPRESS
Probably the 577 3¼ case necked down to .500" This second specimen has a steel cap inserted in the Lead round nose bullet
577/500 3 1/8″ NITRO EXPRESS
Second specimen with a steel capped lead round nose
577/500 3 1/8″ NITRO FOR BLACK POWDER
577/500 HARTMANN & WEISS
Based on the 577 Nitro British case it was introduced circa 2000 by the Hamburg based rifle manufacturers Hartmann & Weiss. It is known in headstamped versions produced by Horneber Hulsen and unheadstamped versions produced by both Horneber Hulsen and...