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.475 Linebaugh | ||||||||||||
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Type | Handgun | |||||||||||
Place of origin | United States | |||||||||||
Production history | ||||||||||||
Designer | John Linebaugh | |||||||||||
Designed | 1988 | |||||||||||
Variants | .475 Maximum | |||||||||||
Specifications | ||||||||||||
Parent case | .45-70 | |||||||||||
Case type | Semi-rimmed, straight | |||||||||||
Bullet diameter | .475 in (12.1 mm) | |||||||||||
Neck diameter | .504 in (12.8 mm) | |||||||||||
Base diameter | .504 in (12.8 mm) | |||||||||||
Rim diameter | .540 in (13.7 mm) | |||||||||||
Rim thickness | .065 in (1.7 mm) | |||||||||||
Case length | 1.4 in (36 mm) | |||||||||||
Overall length | 1.77 in (45 mm) | |||||||||||
Case capacity | 50.3 gr H2O (3.26 cm3) | |||||||||||
Primer type | Large pistol | |||||||||||
Maximum pressure | 50,000 psi (340 MPa) | |||||||||||
Ballistic performance | ||||||||||||
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Test barrel length: 5.5" Source(s): "Cartridges of the World" [1] |
The .475 Linebaugh (12.1x36mmR) is a rimmed revolver cartridge developed by John Linebaugh in the late 1980s in response to the scarcity of the .348 Winchester brass required to form his .500 Linebaugh cartridge. [2] The cartridge is based on the .45-70 Government case trimmed to 1.4 inches and loaded with .475-inch-diameter (12.1 mm) bullets. While dimensionally similar to the older .45 Silhouette cartridge, the .475 Linebaugh is loaded to considerably higher pressures, resulting in significantly different ballistic performance.
The .475 Linebaugh was first announced in the May 1988 issue of Guns & Ammo in an article written by Ross Seyfried. In 1991, Linebaugh announced a 1.6 inch variant of the .475 Linebaugh for use in converted Ruger .357 Maximum revolvers. This cartridge is known as the .475 Linebaugh Long or .475 Linebaugh Maximum, and produces somewhat greater ballistic performance than the shorter round. [3]
The .475 Linebaugh is intended primarily for hunting and defense against big game. The .475 is capable of propelling a 400-grain (26 g) bullet at a muzzle velocity of 1,400 feet per second (430 m/s), developing 1,741 foot-pounds (2,360 J) of muzzle energy from a 5.5" barrel. These figures compare favorably to those of the popular .44 Magnum, which fires a 240-grain (16 g) bullet at 1,475 feet per second (450 m/s), producing 1,160 foot-pounds (1,570 J) of muzzle energy from a 7.5" barrel. The .475 Linebaugh is ballistically comparable to the .454 Casull, .500 Linebaugh, and "Trapdoor level" loadings of the .45-70 Government, though it is less powerful than the .460 S&W Magnum, .500 Wyoming Express, .500 S&W Magnum, and .500 Bushwhacker rounds, as well as Linebaugh's own .475 and .500 Maximum cartridges. With the exception of the .500 Wyoming Express, however, the .475 Linebaugh is generally chambered in lighter and more compact revolvers than such "super magnum" cartridges, lending itself to easier carry and field use. [3] This results in a relatively high power-to-weight ratio which, in the absence of a muzzle brake, often entails greater felt recoil than produced by heavier firearms chambered in more powerful cartridges. [4]
In 2003, Ruger introduced the .480 Ruger, which is essentially a .475 Linebaugh shortened to 1.285 inches with a marginally lower pressure ceiling (48,000 psi for the .480 Ruger vs. 50,000 psi for the .475 Linebaugh). The performance and recoil generated by the .480 Ruger with standard loadings are comparatively less than those of the .475 Linebaugh. Furthermore, just as the .38 Special cartridge will chamber and fire in revolvers chambered for the more powerful .357 Magnum, the .480 Ruger will chamber and fire in revolvers chambered for the .475 Linebaugh. However, given their comparable operating pressures, the two rounds are far closer in performance than such a comparison would seem to suggest. [2]
The .475 Linebaugh remains a relatively obscure cartridge, owing in part to the commercial success of Smith & Wesson's more powerful .460 S&W Magnum and .500 S&W Magnum cartridges. However, while the .475 Linebaugh was once an exclusively custom proposition, both the Freedom Arms Model 83 and the Magnum Research BFR are currently available in the cartridge.
The .357 SIG is a bottlenecked rimless centrefire handgun cartridge developed by the Swiss-German firearms manufacturer SIG Sauer, in cooperation with ammunition manufacturer Federal Premium. The cartridge is used by a number of law enforcement agencies.
The .357 Smith & Wesson Magnum, .357 S&W Magnum, .357 Magnum, or 9×33mmR is a smokeless powder cartridge with a 0.357 in (9.07 mm) bullet diameter. It was created by Elmer Keith, Phillip B. Sharpe, and Douglas B. Wesson of firearm manufacturers Smith & Wesson and Winchester. The .357 Magnum cartridge is notable for its highly effective terminal ballistics.
The .50 Action Express (AE) (12.7×33mmRB) is a large-caliber handgun cartridge, best known for its usage in the Desert Eagle. Developed in 1988 by American Evan Whildin of Action Arms, the .50 AE is one of the most powerful pistol cartridges in production.
The .45 Colt (11.43×33mmR), often called the .45 Long Colt, is a rimmed, straight-walled, handgun cartridge dating to 1872. It was originally a black-powder revolver round developed for the Colt Single Action Army revolver. This cartridge was adopted by the U.S. Army in 1873 and served as an official US military handgun cartridge for 19 years, before being replaced by the .38 Long Colt in 1892. Although there has never been a ".45 Short Colt" cartridge, the .45 Colt is frequently called the ".45 Long Colt" to better distinguish it from the shorter and less powerful .45 Schofield cartridge, which was also in use around the same time as the .45 Colt.
The .44 Remington Magnum, also known as .44 Magnum or 10.9x33mmR, is a rimmed, large-bore cartridge originally designed for revolvers and quickly adopted for carbines and rifles. Despite the ".44" designation, guns chambered for the .44 Magnum round, its parent case, the .44 Special, and the .44 Special's parent case, the .44 Russian all use 0.429 in (10.9 mm) diameter bullets. The .44 Magnum is based on the .44 Special case but lengthened and loaded to higher pressures for greater velocity and energy.
The .357 Maximum, formally known as the .357 Remington Maximum or the .357 Max, is a super magnum handgun cartridge originally developed by Elgin Gates as the wildcat .357 SuperMag. The .357 Maximum was introduced into commercial production as a joint-venture by Remington Arms Company and Ruger in 1983 as a new chambering for the Ruger Blackhawk. Shortly thereafter, Dan Wesson Firearms and Thompson/Center Arms introduced firearms in this cartridge. United Sporting Arms chambered it in their Silhouette series single-action revolvers. It is a .357 Magnum case lengthened 0.300 inches (7.6 mm). Based on the .357 Magnum cartridge, a revolver or single-shot pistol designed for the .357 Remington Maximum will chamber and fire the .360 Dan Wesson, .357 Magnum, .38 Special, .38 Long Colt, and .38 Short Colt cartridges. Intended primarily as a silhouette cartridge, such high velocity and energy levels have hunting applications. SAAMI pressure level for this cartridge is set at 40,000 pounds per square inch (280 MPa).
The .41 Remington Magnum, also known as .41 Magnum or 10.4×33mmR, is a center fire firearms cartridge primarily developed for use in large-frame revolvers, introduced in 1964 by the Remington Arms Company, intended for hunting and law enforcement purposes.
The .480 Ruger (12.1×33mmR) is a large, high-power revolver cartridge, introduced in 2003 by Ruger and Hornady. It was the first new cartridge introduced by Ruger, and when introduced, was the largest-diameter production revolver cartridge, at .475 in (12.1 mm).
The .460 S&W Magnum round is a powerful revolver cartridge designed for long-range handgun hunting in the Smith & Wesson Model 460 revolver.
The Ruger Blackhawk is a six-shot, single-action revolver manufactured by Sturm, Ruger & Co. It is produced in a variety of finishes, calibers, and barrel lengths.
The Magnum Research BFR is a single-action revolver manufactured by Magnum Research. Modeled after the Ruger Blackhawk, it is constructed of stainless steel and chambered for a number of powerful handgun cartridges, such as .460 S&W Magnum and .500 S&W Magnum; popular rifle chamberings, including .30–30 WCF, .444 Marlin, and .45-70 Government; and even .410 bore shotshells. Notably, the BFR platform has also served as the basis for custom caliber conversions to 19th century big game cartridges such as the .50–110 WCF and .50-90 Sharps, as well as the .500 Bushwhacker, which is currently considered to be the most powerful handgun cartridge in the world in terms of muzzle energy. The name "BFR" originally stood for "Brainerd’s First Revolver", in reference to Brainerd, Minnesota, where the early BFRs were manufactured. Officially the acronym now stands for "Biggest, Finest Revolver", though it was rebranded for a time as the "Big Frame Revolver" after Magnum Research's 2010 acquisition by Kahr Arms.
The .500 Wyoming Express or .500 WE is a "big bore" handgun cartridge. Freedom Arms introduced the cartridge in 2005 for their Model 83 .500 WE revolver.
The Super Redhawk is a line of double-action magnum revolvers made by Sturm, Ruger beginning in 1987, when Ruger started making weapons using larger, more powerful cartridges such as .44 Magnum, .454 Casull, and .480 Ruger.
Overpressure ammunition, commonly designated as +P or +P+, is small arms ammunition that has been loaded to produce a higher internal pressure when fired than is standard for ammunition of its caliber, but less than the pressures generated by a proof round. This is done typically to produce ammunition with higher muzzle velocity, muzzle energy, and stopping power, such as ammunition used for security, defensive, or hunting purposes. Because of this, +P ammunition is typically found in handgun calibers which might be used for paramilitary forces, armed security, and defensive purposes.
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 rifle and shotgun cartridges, such as the .17 Winchester Super Magnum and the 31⁄2" 12 Gauge Super Magnum. In this case, it simply denotes that it is of greater power than existing "magnums" of a similar caliber or gauge, this is comparable to other designations, such as the "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.
The .327 Federal Magnum is a cartridge introduced by Federal Premium Ammunition and also sold by Sturm, Ruger & Co. It is intended to provide the power of a .357 Magnum in six-shot, compact revolvers, whose cylinders would otherwise only hold five rounds. The .327 has also been used in full-sized revolvers with a capacity of seven rounds or more. The .327 Federal Mag is an example of a "super magnum", because it is a magnum of a magnum, the .32 H&R Magnum.
The .500 Linebaugh (13x35mmR) is a .50 caliber handgun cartridge designed for use in handguns. It is considered one of the most powerful handgun cartridges designed in terms of kinetic energy and power factor (momentum).
The .500 S&W Magnum or 12.7×41mmSR is a .50 caliber semi-rimmed revolver cartridge developed by Cor-Bon in partnership with the Smith & Wesson "X-Gun" engineering team for use in the Smith & Wesson Model 500 X-frame revolver and introduced in February 2003 at the SHOT Show. From its inception, it was intended to be the most powerful handgun cartridge to date, with the capacity to harvest all North American game species. While more powerful handgun cartridges, such as the .500 Bushwhacker, have emerged since, they are only available in custom firearms, and the .500 S&W remains the most powerful production handgun cartridge.
The .500 Bushwhacker is a .50 caliber semi-rimmed revolver cartridge developed by TII Armory for the Magnum Research BFR revolvers. It is currently the most powerful revolver cartridge in the world, offering a similar level of ballistic performance to African stopping rifles, such as the .416 Rigby and .470 Nitro Express. Given comparable barrel lengths, it is nearly twice as powerful as the .500 S&W Magnum. A 10-inch barrel revolver chambered in the cartridge is capable of penetrating 96 inches of 10% Clear Ballistics gel.