Thompson/Center Ugalde

Last updated

The Thompson/Center Ugalde, or TCU family of wildcat cartridges, was developed by Wes Ugalde of Fallon, Nevada, by necking up .223 Remington brass to accept larger bullets. The cartridges were developed for the Thompson Center Arms Contender single shot pistol, and are widely used in handgun metallic silhouette competition and handgun hunting. [1]

Wildcat cartridge cartridge

A wildcat cartridge, often shortened to wildcat, is a custom cartridge for which ammunition and/or firearms are not mass-produced. These cartridges are often created in order to optimize a certain performance characteristic of an existing commercial cartridge.

Fallon, Nevada City in Nevada, United States

Fallon is a city in Churchill County, Nevada, United States. The population was 8,606 at time of the 2010 census. Fallon is the county seat of Churchill County and is located in the Lahontan Valley.

.223 Remington Firearms cartridge

The .223 Remington is a rifle cartridge, developed in 1957, for the ArmaLite AR-15. In 1964, the ArmaLite AR-15 was adopted by the United States Army as the M16 rifle, and it would later become the standard U.S. military rifle. The military version of the cartridge uses a 55-gr full metal jacket bullet and was designated M193. In 1980, the .223 Remington was transformed into a new cartridge, a 62-gr full metal jacket bullet with a 7-gr steel core for better penetration and designated 5.56×45mm NATO.

Contents

History and motivation

The Contender pistol, with its break action, provides a very versatile platform for experimenting with cartridges, since all that is needed to change calibers is to change barrels. While not as strong as bolt action designs, such as the Remington XP-100, the Contender is capable of handling medium power cartridges, and many wildcats appeared based on cartridges such as the .30-30 Winchester and the .223 Remington. The TCU family is formed by necking up the .223 to the new diameter, and fire forming to reduce case taper and increase shoulder angle. The 7 mm version first appeared around 1980, with the .25 caliber appearing in 1987. The larger calibers provide more downrange energy, and resist wind deflection better than the original .22 caliber (5.56mm) bullet, and the moderate case capacity of the .223 Remington works well in the short pistol barrels. [1] [2] [3] [4] [5]

Break action firearm action using a hinge to expose the breech

Break action is a type of firearm action in which the barrel or barrels are hinged much like a door and rotate perpendicularly to the bore axis to expose the breech and allow loading and unloading of cartridges. A separate operation may be required for the cocking of a hammer to fire the new round. There are many types of break-action firearms; break actions are universal in double-barrelled shotguns, double rifles and combination guns, and are also common in single shot rifles, pistols, and shotguns, and can also be found in flare guns, grenade launchers, air guns and some older revolver designs. They are also known as hinge-action, break-open, break-barrel, break-top, or, on old revolvers, top-break actions.

Remington XP-100 bullpup bolt-action pistol

The Remington XP-100 is a bolt-action pistol produced by Remington Arms from 1963 to 1998. The XP-100 was one of the first handguns designed for long-range shooting, and introduced the .221 Remington Fireball and 6mm-223 6×45mm. The XP-100 was noted for its accuracy and is still competitive today in the sport of handgun varminting, which it helped create.

.30-30 Winchester rifle cartridge

The .30-30 Winchester/.30 Winchester Center Fire cartridge was first marketed in 1895 for the Winchester Model 1894 lever-action rifle. The .30-30 (thirty-thirty), as it is most commonly known, was the USA's first small-bore, sporting rifle cartridge designed for smokeless powder.

Variants

The cartridges in the TCU family include:

Popularity

The TCU family of cartridges is still going strong in competition, with top shooters at the 2007 IHMSA championship shooting 6.5 mm and 7 mm TCU from both Contenders and other pistols. [6]

Methodology

Generally, only new, unfired .223 Remington brass is used for handloading TCU cartridges to avoid the premature case neck splits that can occur when resizing previously-fired .223 Remington brass with TCU reloading dies. Done this way, TCU sized brass generally becomes as reliable for multiple reloadings as any other handgun cartridge case.

Related Research Articles

Cartridge (firearms) type of ammunition packaging a bullet or shot, a propellant substance, and a primer within a metallic, paper, or plastic case

A cartridge or a round is a type of pre-assembled firearm ammunition packaging a projectile, a propellant substance and an ignition device (primer) within a metallic, paper or plastic case that is precisely made to fit within the barrel chamber of a breechloading gun, for the practical purpose of convenient transportation and handling during shooting. Although in popular usage the term "bullet" is often used to refer to a complete cartridge, it is correctly used only to refer to the projectile.

The .256 Winchester Magnum was a firearms cartridge developed by Winchester, and was produced by necking-down a .357 Magnum cartridge to .257 diameter. It was designed for shooting small game and varmints.

The .221 Remington Fireball is a centerfire cartridge created by Remington Arms Company in 1963 as a special round for use in their experimental single-shot bolt-action pistol, the XP-100. A shortened version of the .222 Remington, it is popular as a varmint and small predator round while also finding use among target shooters. It has application as both a pistol round and as a rifle round.

.300 Whisper cartridge

The '.300 Whisper', a CIP standard, is one of many cartridges designed to shoot heavier bullets at subsonic velocities.

7mm-08 Remington Necked down .308Win

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. Of cartridges based upon the .308, it is the second most popular behind only the .243 Winchester. However, the .308 is more popular than both. In 1980, the Remington Arms company popularized the cartridge by applying its own name and offering it as a chambering for their Model 788 and Model 700 rifles.

.475 Wildey Magnum pistol cartridge

The .475 Wildey Magnum is a semi-automatic pistol cartridge designed for big game hunting in the Wildey pistol.

8mm Remington Magnum

The 8mm Remington Magnum belted rifle cartridge was introduced by Remington Arms Company in 1978 as a new chambering for the model 700 BDL rifle. The 8mm Remington Magnum's parent case is the .375 H&H Magnum. It is a very long and powerful cartridge that cannot be used in standard length actions, such as those that accommodate the .30-06 Springfield.

.35 Whelen cartridge

The .35 Whelen is a powerful medium-bore rifle cartridge that does not require a magnum action or a magnum bolt-face. The parent of this cartridge is the .30-06 Springfield, which is necked-up to accept a bullet diameter of .358 in (9.1 mm). This cartridge is more powerful than its parent, especially in killing power on large game.

The .260 Remington cartridge was introduced by Remington in 1997. Many wildcat cartridges based on the .308 Winchester case had existed for years before Remington standardized this round. Although loaded to higher pressures, the ballistics of this cartridge are basically similar to the 6.5×55mm when bullet weights do not exceed 140 grains. When loaded with heavier bullets, the 6.5×55mm is capable of greater velocity. Due to its shorter overall length the .260 Remington can be chambered in a shorter length action than the 6.5×55mm.

Super magnum cartridge

A super magnum is a longer and/or more powerful version of a "magnum" cartridge. Although the term "super magnum" typically refers to a handgun cartridge, created by lengthening an existing straight-case design, it can also refer to a rifle cartridge, such as the .17 Winchester Super Magnum (WSM). In this case, it simply denotes that it is of greater power than existing "magnums" of similar caliber, similar to other designations such as "Remington Ultra Magnum". The most widespread of these cartridges are the "SuperMag" family of super-magnum handgun cartridges that were proposed and tested by Elgin Gates in the 1970s.

.257 Roberts cartridge

The .257 Roberts, also known as .257 Bob, is a medium-powered .25 caliber cartridge. It has been described as the best compromise between the low recoil and flat trajectory of smaller calibers such as the .22 and 6mm, and the strong energy but not the strong recoil of larger popular hunting calibers, such as the 7mm family and the popular .30-06.

22 caliber, or 5.6mm caliber, refers to a common firearms bore diameter of 0.22 inch (5.6 mm). Both the .22 Long Rifle and 5.56×45mm NATO/.223 Remington cartridges are very widely used.

P.O. Ackley Gunsmith, author and columnist

Parker Otto Ackley was an American gunsmith, barrel maker, author, columnist, and wildcat cartridge developer. The Ackley Improved family of wildcat cartridges are designed to be easily made by rechambering existing 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 also other popular wildcats, and was the first to create a .17 caliber (4.5 mm) centerfire cartridge.

The 6×45mm is a rimless, bottlenecked cartridge based on the .223 Remington or 5.56 NATO cartridge necked up to .243 (6mm). The cartridge is also known as the 6mm-223 Remington or 6mm/223.

.30-06 Springfield wildcat cartridges cartridge

.30-06 Springfield wildcat cartridges are cartridges developed from a 30-06 Springfield "parent cartridge" through narrowing or widening the cartridge neck to fit a smaller or larger bullet in an attempt to improve performance in specific areas. Such wildcat cartridges are not standardized with recognized small arms standardization bodies like the SAAMI and the CIP.

Varmint rifle small-caliber firearm for hunting small animals

Varmint rifle is an American English term for a small-caliber precision firearm or high-powered airgun primarily used for both varmint hunting and vermin control. These tasks include killing three types of pests or nuisance animals that spread diseases or destroy crops or livestock:

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 cartridge requiring only a new barrel to upgrade/convert any 5.56-based firearm to .277 Wolverine.

References

  1. 1 2 Bryce M. Towsley (May 1997). "Case-Forming Top Contender Hunting Loads". Performance Shooter.
  2. 1 2 "6mm TCU". The Reload Bench.[ self-published source ]
  3. 1 2 ".25 Uglade/TCU". The Reload Bench. Archived from the original on 2009-12-22.[ self-published source ]
  4. 1 2 "6.5mm TCU". The Reload Bench.[ self-published source ]
  5. 1 2 "7mm TCU". The Reload Bench.[ self-published source ]
  6. "Results from the 2007 Internationals, Big Bore".