1.
.460 Weatherby Magnum
–
The.460 Weatherby Magnum is a belted, bottlenecked rifle cartridge, developed by Roy Weatherby in 1957. The cartridge is based on the.378 Weatherby Magnum necked up to accept the. 458-inch bullet, the original.378 Weatherby Magnum parent case was inspired by the.416 Rigby. The.460 Weatherby Magnum was designed as an African dangerous game cartridge for the hunting of heavy. However handloaders can push the cartridge to generate as much as 15,000 foot-pounds of energy in a bolt action. However, doing so necessitates a rifle so heavy it is almost inoperable for hunting purposes, the.700 Nitro Express was itself eclipsed in only five years by the 1993 introduction by A-Square of the.577 Tyrannosaur. The.577 T-Rex develops approximately 10,180 foot-pounds force with a velocity of 2,460 ft/s, the.460 will launch a 500-grain bullet at a chronographed velocity of 2,700 ft/s from a 26-inch barrel, measuring 8,100 ft·lbf of muzzle energy. Prior to the arrival of the.460 Weatherby Magnum on the hunting scene, Roy Weatherby had expected that the. Furthermore, new regulations prohibiting the hunting of heavy, thick skinned and these regulations would essentially ban the use of all previous Weatherby cartridges for the hunting of elephant, African Cape buffalo and rhinoceros.40 caliber rifles. He accomplished this by necking up the.378 Weatherby Magnum case to accept a.458 caliber bullet and he named the new cartridge the.460 Weatherby Magnum. The first rifles for the.460 Weatherby Magnum were built on Brevex Magnum Mauser action, however, Roy Weatherby was not the first cartridge designer to neck up the.378 Weatherby Magnum to.45 caliber. That distinction belongs to John Buhmiller, a gunsmith and hunter from Montana, Buhmiller named his cartridge the.45 Weatherby. He had success with the cartridge in Africa shooting Cape buffalo and rogue elephants in 1956, Norma Precision of Sweden was the first and only manufacturer of.460 Weatherby Magnum cases and ammunition which carried the Weatherby name and has done so under contract from Weatherby. During Weatherby’s partnership with J. P. Sauer/Dynamit-Nobel, production at Norma ceased and shifted to RWS, a wholly owned subsidiary of Dynamit-Nobel. However, RWS did not tool up in time to produce the.460 Weatherby Magnum cartridge, DuPont at one time shipped DuPont No.4350 powder to Norma Projektilfabrik for the reloading of Weatherby ammunition. But some time later Norma was able to source a powder with similar burn characteristics locally which was used instead of DuPonts IMR4350, Norma would later purchase the company and rename the powder Norma 204. The.460 Weatherby Magnum case uses a necked up.378 Weatherby Magnum case. Although the.378 Weatherby Magnum case was inspired by the.416 Rigby case, the.460 Weatherby Magnum requires a case with the large propellant capacity necessary to propel a 500 gr bullet at 2,700 ft/s. To accomplish this goal, the cartridge case has a capacity able to hold 141.1 gr. of water

2.
.460 S&W Magnum
–
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.460 S&W round is a lengthened, more powerful version of the popular.454 Casull, itself a longer and more powerful version of the.45 Colt. Consequently, firearms that fire.460 S&W are usually capable of firing the less powerful.454 Casull.45 Colt and.45 Schofield rounds, for instance, some lever-action firearms are designed to handle cartridges within a certain length and bullet profile range. The reverse, however, does not apply.45 Schofield.45 Colt, the length of the.460 S&W was intended to fully use the overall length of the S&W X frame cylinder thereby increasing its powder capacity. The.460 cartridge achieves high velocities by operating at chamber pressures normally reserved for magnum rifle cartridges, Smith & Wesson says that the.460 S&W is the highest velocity revolver cartridge in the world, firing bullets at up to 2409 ft/s. For comparison, Hornadys 9249 load for the.500 S&W Magnum cartridge offers a bit more energy at the muzzle, achieving 2,868 ft lbf by driving a 300 grain FTX bullet at 2,075 ft/s. Buffalo Bores loading for the.500 S&W Magnum cartridge offers much less energy at the muzzle, achieving only 2,579 ft lbf by driving a 440 grain.500 caliber bullet at 1625 ft/s

3.
.460 Rowland
–
The.460 Rowland cartridge was designed, developed and trademarked by Johnny Ray Rowland, host of The Shooting Show. The purpose of the cartridge is to enable.44 Magnum power and performance in lightweight, high-capacity, Rowland worked with his friend and noted pistol-smith Jim Clark to develop the conversion. Rowland then collaborated with Starline Brass to finalize production of the casings. He first commercially distributed ammunition and conversions for the 1911 semi-automatic handgun in 1998, the company offers ammunition and conversions for various.45 ACP firearms. The slim-lined Smith and Wesson M&P, both size and compact, can also be converted. Companies authorized or licensed to offer 460 Rowland products are.460 Rowland LLC, Starline Brass, Underwood Ammunition, others are in evident violation of federal patent and trademark law. The.460 Rowland case is approximately 1/16 longer than a conventional.45 ACP case, but the overall length is the same. The purpose of the case length is to prevent the high pressure.460 Rowland from being chambered in a standard firearm chambered for the low pressure.45 ACP. Autoloaders converted to fire the.460 Rowland Cartridge require a properly designed compensator or ported barrel, ported barrels have proven viable in managing the power of the cartridge, but result in somewhat more muzzle flip and felt recoil. The cartridges can be more readily taken in and out of the slide —legal in restrictive states like California—without needing to secure the compensator to the barrel. High quality 1911s are manufactured by different companies and tolerances vary with each manufacturer. It is necessary to adjust recoil spring tensions and to identify specific magazines that work best in each gun and this must be done when converting a 1911 to fire the.460 Rowland cartridge. Without this compensation, slide or frame failure will likely result over time, the Ruger Blackhawk and Smith & Wesson Model 25/625 can also be chambered to fire the.460 Rowland. Converting these revolvers requires deepening the chambers and is effectively permanent, unless the owner has a replacement cylinder fitted. For several years Dan Wesson also made a specifically for the.460 Rowland. Rowland does not support demand for stock-looking.460 Rowland conversions. List of handgun cartridges.45 GAP.45 Winchester Magnum.45 Super.44 Magnum 11 mm caliber Authentic.460 Rowland Ballistics By The Inch.460 Rowland Results

.460 Weatherby Magnum
–
The.460 Weatherby Magnum is a belted, bottlenecked rifle cartridge, developed by Roy Weatherby in 1957. The cartridge is based on the.378 Weatherby Magnum necked up to accept the. 458-inch bullet, the original.378 Weatherby Magnum parent case was inspired by the.416 Rigby. The.460 Weatherby Magnum was designed as an African dangerous game cartridge

1.
Fourth from right

2.
460 Weatherby Magnum Reloading Components

3.
Handguns

.460 S&W Magnum
–
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.460 S&W round is a lengthened, more powerful version of the popular.454 Casull, itself a longer and more powerful version of the.45 Colt. Consequently, firearms that fire.460 S&W are usually capable of firi

.460 Rowland
–
The.460 Rowland cartridge was designed, developed and trademarked by Johnny Ray Rowland, host of The Shooting Show. The purpose of the cartridge is to enable.44 Magnum power and performance in lightweight, high-capacity, Rowland worked with his friend and noted pistol-smith Jim Clark to develop the conversion. Rowland then collaborated with Starlin

1.
Model 1911 pistol with.460 Rowland conversion. The 1.5" compensator works in conjunction with a 22 to 24 pound recoil spring to effectively control slide velocity and recoil.