Lapua does not manufacture ammunition for the cartridge and should be considered a wildcat cartridge.
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257 Roberts Ackley Improved is a second generation wildcat cartridge based on the .257 Roberts cartridge.
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The 6.5-284 Norma originated as a wildcat cartridge based on the .284 Winchester cartridge necked down to 6.5 mm.
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45 ACP length .40 Special using shortened .30 Remington rifle brass. The resultant wildcat cartridge was then renamed the 10mm Auto.
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The .19 Calhoon Hornet is a .19 caliber rifle wildcat cartridge. The cartridge is based on a necked-down blown-out .
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308 Winchester.[2] Fred Huntington of RCBS had developed what was known as the .243 Rock Chucker wildcat cartridge. This was a necked down .
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The .22-250 started life as a wildcat cartridge developed from the .250-3000 Savage case necked down to take a .224 caliber bullet.
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The .33-40 Pope is a wildcat cartridge designed around 1900 by Harry Pope, a noted rifleman. The cartridge is a necked up .32-40 Ballard.
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The .14-222 is a wildcat cartridge that was created in 1985 by Helmut W. Sakschek. It uses a .222 Remington case necked down to accept a .
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Modern replicas chambered in the .45 Black Powder Magnum wildcat cartridge have been offered by the Colt Blackpowder shop, Cimarron Firearms, Armi San Marco, and Uberti Firearms.
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Although it is a wildcat cartridge, rifles chambered for 5mm/35 are available from the custom shop at Savage Arms. The patents for the cartridge are , and .
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30-30 Ackley Improved. Perhaps the oldest derivative cartridge is the wildcat cartridge 35-30, also known as the 35-30-30, 35/30-30, and 35/30.
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The .22 Bench Rest Remington cartridge, 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 .
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There are potentially endless varieties of wildcat cartridge: one source of gunsmithing equipment has a library of over 6,000 different wildcat cartridges for which they produce equipment such as chamber reamers.
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The 9×25mm Dillon is a pistol wildcat cartridge developed for use in USPSA/IPSC Open guns. The cartridge is made by necking down a 10mm Auto case to 9 mm.
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Although the more powerful .454 Casull wildcat cartridge was announced in 1959, the .44 Magnum was the most powerful production cartridge until the 1980s when the first production .454 Casull revolver was produced.
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The .25-06 Remington had been a wildcat cartridge for half a century before being standardized by Remington in 1969. It is based on the .30-06 Springfield cartridge necked-down (case opening made narrower) to .
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The 6×45 mm is a wildcat cartridge and has not been standardized by any agency nor has it been offered a proprietary cartridge by any ammunition manufacturer. Some specialty rifle makers such as those that sell varmint rifles offer rifles chambered in this cartridge. Specifications for the cartridge are derived from the necked up parent cartridge without further improvement. :6×45mm - all dimensions in inches (mm) The cartridge maximum overall length is nominally given as , however, as the cartridge is a wildcat cartridge chamber dimensions may vary from manufacturer to manufacturer.
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257 Roberts casing shooting a .24/6mm bullet. This ultimately became the .244 Remington. Mike Walker, who had previously designed the Remington Model 722, 'productized' Huntington’s wildcat cartridge and adapted the Model 722 chambering for it in 1955.
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Sedalia, Missouri-based Starline Brass company eventually began marketing factory-manufactured brass cases for the chambering, taking the round out of the obscure wildcat cartridge realm. In addition, Ace Custom .45's Inc. of Cleveland, Texas, trademarked the .
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45 Colt case. The wildcat cartridge finally went mainstream in 1997, when Ruger began chambering its Super Redhawk in this caliber. Taurus followed with the Raging Bull model in 1998 and the Taurus Raging Judge Magnum in 2010. The .
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The .22 CHeetah (both C and H are upper-case,The Confusing World of Cartridge Nomenclature (2540) referring to Carmichel / Huntington) is a .22 wildcat cartridge developed in the 1970s or 1980s by Jim Carmichel and Fred Huntington. The .
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Rifles for .50 BMF Bullet are available from some specialty gunsmiths and also conversions from Marlin and Winchester lever-action rifles. Reloading dies are available from Hornady. Although it is considered a wildcat cartridge, loaded ammunition is available from Buffalo Bore.
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After World War II, with a supply of 6.5mm rifles (.264 caliber), the availability of slower burning powders, and inexpensive, surplus .30-06 brass cases, shooters developed the 6.5mm-06 wildcat cartridge by necking down the .30-06 case to 6.5mm (.
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The .300 Winchester Magnum was designed with a neck which is shorter than the diameter of its bullet. If Winchester had released the cartridge prior to 1960, the cartridge would have been similar to the .30-338 Winchester wildcat cartridge.
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The .454 Casull () is a firearm cartridge, developed as a wildcat cartridge in 1957 by Dick Casull, Duane Marsh and Jack Fullmer. It was first announced in November 1959 by Guns & Ammo magazine. The basic design was a lengthened and structurally improved .
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Tom Sarver used a .300 Hulk wildcat cartridge, which is basically a necked- down, blown out, shortened .338 Lapua Magnum variant, to achieve a diameter benchrest 5-shot group on 7 July 2007, establishing a world record.Sarver Shoots 1.403″ Group at 1000 Yards .
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The .50 Alaskan is a wildcat cartridge developed by Harold Johnson and Harold Fuller of the Kenai Peninsula of Alaska in the 1950s. Johnson based the cartridge on the .348 Winchester in order to create a rifle capable of handling the large bears in Alaska.
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47 caliber (12 mm) wildcat cartridge designed by the Atkinson & Marquart Rifle Company of Prescott AZ. It is based on the .460 Weatherby Magnum necked up to accept a diameter bullet. The .475 A&M; Magnum is capable of launching a at for energy.
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Jim Harvey was an American designer of firearms, cartridges, and fishing lures, based out of Lakeville, Connecticut. Among his firearms innovations, Harvey invented the .224 Harvey Kay-Chuck handgun cartridge, a wildcat cartridge based on the .22 Hornet, modified to fire in revolvers, a predecessor of the .
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In 1963 the Browning Arms Company started to chamber its Browning High Power Rifle in the .22-250, at the time a wildcat cartridge. This was a risky yet historical move on Browning's part as there was no commercial production of the .22-250 at the time.
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The .277 Wolverine (6.8×39mm) is a wildcat cartridge. It is a multi-purpose mid-power cartridge with increased ballistic performance over the AR-15's traditional .223 Remington (5.56×45mm NATO) cartridge requiring only a new barrel to upgrade/convert any 5.56-based firearm to .
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The .338 Whisper is a wildcat cartridge in the Whisper family, a group of cartridges developed in the early 1990s by J.D. Jones of SSK Industries. Unlike the smaller caliber cartridges in the Whisper family, loads for the .338 Whisper are mainly limited to subsonic velocities.
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Richard J. "Dick" Casull () (February 15, 1931 – May 6, 2018) was a Salt Lake City-bornRichard “Dick” Casull (1931-2018) - Find A Grave Memorial Retrieved 2018-09-09. gunsmith and wildcat cartridge developer whose experiments with .45 Colt ammunition in the 1950s led to the creation of the .454 Casull cartridge.
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This caused the cartridge to have a neck shorter than the diameter of the bullet. There has been some speculation that if the cartridge was released earlier, the dimensions of the cartridge would have matched the .30-338 Winchester wildcat cartridge. Since its introduction the cartridge has remained extremely popular.
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What the 6.5-08 provided over the .243 Winchester, .308 Winchester, and to a lesser degree the 7mm-08 Remington was bullets with excellent ballistic coefficients and sectional densities. Since the 6.5-08 was a wildcat cartridge, variations existed between cartridge chambers depending on the reamer used to cut the chamber.
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The .17 Hornet is a .17 caliber centerfire rifle cartridge originally offered as a "wildcat cartridge" developed by P.O. Ackley in the early 1950s. He created this non-factory (wildcat) offering by simply necking-down the .22 Hornet to .17 caliber and fire-forming the resized cases in his new chamber design.
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The 7mm-08 Remington is a rifle cartridge that is almost a direct copy of a wildcat cartridge developed around 1958 known as the 7mm/308. As these names would suggest, it is the .308 Winchester case necked down to accept 7 mm (.284) bullets with a small increase in case length.
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22 WCF at Springfield Armory. Winchester adopted what had so far been a wildcat cartridge in 1930, producing ammo for a cartridge for which no commercially made guns yet had been built. It was not until 1932 that any company began selling commercially made guns for the cartridge. Wildcat variants of the .
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Several experimental cartridges were produced, culminating in a convertible lightweight bolt-action rifle able to use .50 caliber machine-gun cartridges, or a lighter, faster, then-wildcat cartridge optimized for antipersonnel use, with some antimaterial ability. The US Army declined to purchase the lighter rifle, but purchased a small number of the .50 caliber rifles.
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Both cartridges head-space on this rim. While the Ackley cartridge uses a 30-degree shoulder angle and the Hornady is 25 degrees, its longer shoulder is accommodated by Ackley's longer case body. Fireforming moves the Hornady's shoulder forward at the expense of neck length. There is another size issue: according to Ackley's manual, his wildcat cartridge is only .
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45 Colt case. The wildcat cartridge finally went mainstream in 1997, when Ruger began chambering its Super Redhawk in this caliber. Taurus followed with the Raging Bull model in 1998 and the Taurus Raging Judge Magnum in 2010. Taurus also made a now-discontinued Rossi-branded R92 lever action carbine clone of the Winchester 1892 chambered for the .
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The cartridge has very low recoil and muzzle blast which make it a pleasant cartridge to shoot. Since the cartridge was never commercially adopted by an ammunition manufacturer, it has remained a wildcat cartridge since its inception. However, making cases from existing .223 Remington brass is as simple as running the case through a 6×45mm die.
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The .338 Norma Magnum was originally developed as a long-range sport shooting wildcat cartridge by the American sport shooter Jimmie Sloan with the help of Dave Kiff, owner of Pacific Tool and Gauge, who made the reamers and headspace gauges. Barrels were supplied by Satern Rifle Barrel Company. Various twist rates were tried with 5R rifling.
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The cartridge was later developed by Grennell, along with Tom Ferguson and Ace Hindman (of Ace , in Texas). Along with Wes Ugalde of Fallon, Nevada, Grennell was co-developer of Ugalde wildcat cartridge (also known as the Thompson/Center Ugalde, TCU). He was also credited as the inventor of the NEXPANDER cartridge reloading tool, which is still in production.
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This proved impossible due to the tensile strength of the Colt .45 cylinder, so he set out to develop his own casing and bullet. Casull began his career as a wildcat cartridge developer after having contact with Elmer Keith in the 1940s, an Idaho rancher, firearms enthusiast, and author. Keith was instrumental in the development of the first magnum revolver cartridge, the .
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Casull also worked with Oregon-based gunsmith P.O. Ackley, the famous wildcat cartridge developer. Ackley developed a family of improved wildcat cartridges by rechambering extant firearms and fireforming the ammunition to decrease body taper and increase shoulder angle, resulting in a higher case capacity. Ackley improved not only standard cartridges but was the creator of the first .17 caliber (4.5 mm) centerfire cartridge.
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The rifling twist rate for the .343 Lapua Magnum LM-107 wildcat cartridge was chosen at 180 mm (1:7 inch), Ø lands = 8.72 mm, Ø grooves = 8.45 mm and loaded with the LM-107 projectile has a cartridge overall length of . The length of the neck is increased from 8,31 to 8,50 mm to support the bigger LM-107 bullet.
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The Timberwolf rifle was originally developed as a civilian long range hunting and sport shooting rifle for super magnum cartridges by the Canadian company Prairie Gun Works, now PGW Defence Technologies Inc. The civilian Timberwolf rifle is offered in several chamberings, up to the .408 Cheyenne Tactical cartridge and the .416 PGW cartridge, a wildcat cartridge based on the .408 Cheyenne Tactical.
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338 Xtreme load and non C.I.P.conform .338 Lapua Magnum based cartridges like the LM-105 wildcat cartridge utilizing the LM-105 projectile with a claimed G1 ballistic coefficient of ≈ 0.93 are similar. A small production facility and single-source manufacturing affect availability of both the weapon and the ammunition components, so it is unlikely that the .338 Xtreme will be adopted as a military cartridge.
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35 Whelen was developed in 1922 as a wildcat cartridge. Remington Arms Company standardized the cartridge as a regular commercial round and first made it available in the Remington model 700 Classic in 1988. One version of its origin is that it was designed by Colonel Townsend Whelen when he was commanding officer of the Frankford Arsenal. In a 1923 issue of American Rifleman Col.
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The 2010 version of the LM-105 bullet has an overall length of or 6.33 calibers and derives its exceptional low drag from a radical LD Haack or Sears-Haack profile in the bullet's nose area. Rifles chambered for this wildcat cartridge, with a cartridge overall length of , and equipped with custom made 178 mm (1:7 inch) progressive twist rateProgressive twist rate barrels .
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Aside from existing Marlin models, the basic Model 336/Model 1895 receiver and lever action mechanism has enjoyed some popularity as a parent for various wildcat caliber conversions. These custom rifles are increasingly popular in the western United States, Canada, and Alaska where encounters with grizzly bears and other potentially dangerous animals can be expected. Some of these wildcat cartridge conversions include the .450 Alaskan, .
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This means that 8×64mm S chambered arms in C.I.P. regulated countries are currently (2016) proof tested at PE piezo pressure.C.I.P. TDCC datasheet 8 × 64 S The American 8mm-06 wildcat cartridge (in European nomenclature the 8mm-06 would be termed as 8×63mm S) is probably the closest ballistic twin of the 8×64mm S. This is a necked up .30-06 Springfield wildcat made to accept 8 mm (.
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There are two methods of fire forming. One method is to cold form a parent case using forming dies, creating some form of headspace, load the case and fire the cold formed cartridge in the chamber of the firearm. This first method is the most common and will create a wildcat cartridge. The second method is to fire form a factory cartridge by using its factory headspace to headspace on.
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All this modifications make the .343 Lapua Magnum a fairly comprehensively revised wildcat cartridge. Out of a long progressive twist barrel Mr. Möller expected to achieve muzzle velocity. If Möller's design assumptions are correct the LM-107 projectile with a calculated G1 BC of 1.02 will offer a supersonic range of ≈ at a muzzle velocity of under International Standard Atmosphere sea level conditions (air density ρ = 1.225 kg/m3).
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260 Remington started its life as a wildcat cartridge called the 6.5-08, and was eventually released as a commercial cartridge by Remington. However, Remington was not the first to attempt to standardize the cartridge. LTC Arthur Alphin and his company A-Square LLC submitted the first proposal and drawings to SAAMI for the standardization of the cartridge. Remington filed similar papers with SAAMI to do the same a few months later.
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The result was availability to an elite audience of especially keen and affluent shooters of the original wildcat .25 Roberts cartridge, designed to be capable of firing 1-inch ten shot groups at 100 yards from a rest with a telescopic sight. Griffin & Howe, the great New York custom gun-making firm, soon followed suit, making custom rifles chambered in their own slightly-modified version of the wildcat cartridge. The .25 Griffin & Howe differed from the .
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The 7×57mm Mauser is also used as the parent case for a host of modified variants that are not officially registered with or sanctioned by C.I.P. or its American equivalent, SAAMI. These cartridges are known as wildcat cartridges. The US wildcat cartridge developer P.O. Ackley developed several 7×57mm Mauser based wildcat cartridges.P.O. Ackley's wildcats The 7×57mm Mauser Ackley Improved is an alternate version of the 7×57mm Mauser cartridge with 40 degree shoulder.
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The .450 SMC is a 45ACP Wildcat cartridge for use in robust 45ACP firearms that uses a modified 308 Winchester case with a small rifle primer adapted for use in modern 45ACP firearms. 1911 pistols or heavier firearms with upgraded heavier springs are recommended. A small rifle primer 308 Winchester case is first cut down then resized to 45ACP spec,then primed with a small rifle primer as opposed to using the lower pressure pistol primer.
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CZ 550 elephant gun/stopper rifle chambered for the .585 Gehringer wildcat cartridge. The CZ 550 system consists of a receiver that serves as the systems shroud and a bolt group of which the bolt body has three locking lugs, two large main lugs at the bolt head and a third safety lug underneath the bolt handle acting as a backup. The bolt handle is permanently attached to the bolt and is turned-down and backwards for use with optical sights.
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The 7-30 Waters cartridge was originally a wildcat cartridge developed by author Ken Waters in 1976 to give better performance to lever-action rifle shooters than the parent .30-30 Winchester cartridge, by providing a higher velocity and flatter trajectory with a smaller, lighter bullet. By 1984, Winchester introduced a Model 94 rifle chambered for the 7-30 Waters, establishing it as a commercial cartridge. In 1986, Thompson/Center began chambering 10-inch, 14-inch, and 20-inch Contender barrels for the cartridge.
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The new cartridge was developed based on previous lessons learned from the development of the Night Fighting Weapon System. It was intended to offer improved lethality over 9mm and 5.56mm rounds in subsonic loads for use in CQB and suppressed weapons with a range of 300 meters. The Musang is a "Wildcat cartridge" inspired by the .300 Whisper concept and made from components already produced or procured by the Government Arsenal. It uses a 5.56×45mm NATO cartridge case, necked-up to accept a Cal .
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This might expand a cartridge to a new size, such as a wildcat cartridge, or just to the chamber of a specific gun. Fire forming a wildcat differs from the normal manufacturing process; in that it relies on firing a loaded cartridge of differing dimensions than the chamber which it is being fired in. After fire forming, the spent case will take on the new dimensions of the firearm's chamber. Fire forming is the final process in creating a wildcat or an improved cartridge.
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The .338-378 Weatherby Magnum started out as the wildcat cartridge, .338-378 Keith-Thomson Magnum during the early 1960s. Keith and Thomson are Elmer Keith and R.W. "Bob" Thomson. The 338-378 Keith-Thomson Magnum is a quarter of an inch shorter than the full length 338-378 Weatherby Magnum, this was because they thought it was better balanced with the slowest powder generally available at that time (H4831). The .338-378 Weatherby Magnum was added to the Weatherby product line in 1998. The .
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A real world average G1 BC of ≈ 0.83 or a G7 BC of ≈ 0.42 is commonly adopted by the users of this bullet, for making long range trajectory predictions using ballistics calculators. In contrast the LM-105 designer Lutz Möller originally calculated an optimistic G1 BC of ≈ 0.93 and a supersonic range of ≈ at a muzzle velocity of under International Standard Atmosphere sea level conditions (air density ρ = 1.225 kg/m3). The .343 Lapua Magnum LM-107 was a wildcat cartridge under development based on the standard .
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Careful adjustment of the amount of powder can give the velocity that best fits the natural harmonics of the barrel (see accurize and internal ballistics). For ultimate accuracy and performance, the handloader also has the option of using a wildcat cartridge; wildcats are the result of shaping the cartridge and chamber themselves to a specific end, and the results push the envelope of velocity, energy, and accuracy. Most, but not all, reloads perform best when the powder selected fills 95% or more of the case (by volume).
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Soon after the introduction of the 6.5×47mm Lapua, shooters were using the case as the basis for a new wildcat, by necking it down to 6 mm. This wildcat cartridge is often called a 6-6.5×47 to avoid confusing it with the 6×47 Swiss Match, a similar case but with a large rifle primer. Another version that has been popular is a necked-down version with a 40-degree shoulder. PTG sells reamers for this and it has demonstrated a gain of about 100 fps over the standard 6-6.5×47.
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According to the official C.I.P. (Commission Internationale Permanente Pour L'Epreuve Des Armes A Feu Portative) guidelines the 9×25mm Super Auto G case can handle up to 255 MPa (36,985 psi) piezo pressure. In C.I.P. regulated countries every pistol cartridge combo has to be proofed at 130% of this maximum C.I.P. pressure to certify for sale to consumers. The American 9×25mm Dillon pistol wildcat cartridge is probably the closest ballistic twin of the 9×25mm Super Auto G. These cartridges are both necked down 9 mm variants of the 10 mm Auto cartridge though they vary dimensionally.
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Several companies manufactured copies of the M1 carbine after World War II, which varied in quality. Some companies used a combination of original USGI and new commercial parts, while others manufactured entire firearms from new parts, which may or may not be of the same quality as the originals. These copies were marketed to the general public and police agencies but were not made for or used by the U.S. military. In 1963, firearms designer Melvin M. Johnson introduced a version of the M1 carbine called the "Spitfire" that fired a 5.7 mm (.22 in) wildcat cartridge known as the 5.7 mm MMJ or .
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A.O. Neidner, F.W. Sage, and Ned H. Roberts with rifles, 1912 Major Ned H. Roberts (1866 Goffstown, N.H. -- 1948), was an American hunter, competition target shooter, gun writer & editor, ballistician and firearms experimenter. Roberts was a prolific contributor to sporting publications, including Outdoor Life, Outers, Arms and the Man (later renamed as American Rifleman, and to Hunting and Fishing magazine, for which latter publication he served as Firearms Editor. His work on cartridge design in collaboration with Adolph Otto Niedner, Franklin Weston Mann, Townsend Whelen, and F.J. Sage led to a commercialized version of his own original .25-caliber wildcat cartridge introduced by Remington in 1934 and named the .
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Landis, Charles S. Twenty-Two Caliber Varmint Rifles (Small Arms Technical Publishing Company, 1947) 6mm-06 (also 243-06) - necked down to accept a .243 bullet - Once considered significantly overbore, proponents of the 6mm-06 chambering argue the cartridge is more practical following the development and availability of slower burning powders capable of exploiting the larger case capacity. The cartridge has greater capacity than either the 243 Winchester or the 6mm Remington, slightly more capacity than the 240 Weatherby Magnum, and slightly less capacity than 6mm-284 wildcat cartridge. The 6mm-06 can drive a 105 grain .243 caliber projectile in excess of 3200 feet per second (fps), giving the 6mm-06 a ballistic advantage over the non-magnum .
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The neck of the case, if it becomes too brittle, will be incapable of standing the strain of resizing, expanding, crimping, and firing, and will split during loading or firing. Since the case neck remains in tension while holding the bullet in place, aging ammunition may develop split necks in storage. While a neck split during firing is not a significant danger, a split neck will render the case incapable of holding the bullet in place, so the case must be discarded or recycled as a wildcat cartridge of shorter overall length, allowing the split section to be removed. The simplest way to decrease the effects of work hardening is to decrease the pressure in the case.
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The military stocks were replaced by newer ones that did not include the extra length of stock needed for the bayonet lug. Today these sporter rifles are extremely rare and the 8×60mm S, 8×64mm S and 9×57mm Mauser cartridges are nearly obsolete, as only few mainstream ammunition manufacturers along with some other smaller companies continue to produce them. When correct ammunition is used in a converted rifle, an 8×60mm S, 8×64mm S or 9×57mm Mauser modified Gewehr 98 can be an extremely potent and inexpensive long-range big-game rifle. Also, many Gewehr 98 rifles acquired as trophies by Allied forces during the war and brought to the US were converted to the 8mm-06 wildcat cartridge, a modification of the original 8×57mm IS chambering to 8×63mm S to accommodate the use of the plentiful .
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The 6mm ARC is a factory cartridge which has many similarities with the 6mm AR wildcat cartridge. The case volume of the 6mm ARC is about 2.20 mL (34 grains of water), and the volume therefore lies between those of the two popular 6 mm benchrest cartridges 6mm PPC of 2.10 ml (32 grains of water) and 6mm BR of 2.50 ml (38.5 grains of water). However, the 6mm AR and 6mm ARC separate themselves from the mentioned benchrest cartridges in that they were designed with a 30-degree shoulder angle to ensure reliable feeding in an AR-15 rifle. Larger-sized AR-10 performance cartridges such as 6XC, 6×47mm Lapua, 6.5×47mm Lapua, 6mm Creedmoor and 6.5mm Creedmoor have better long range performance compared to the 6mm ARC, but have more recoil, as well as overall lengths that make them unable to fit in an AR-15 sized magazine well.
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