.458 Winchester Magnum

The .458 Winchester Magnum is a belted, straight-taper cased, dangerous game rifle cartridge. It was introduced commercially in 1956 by Winchester and first chambered in the Winchester Model 70 African rifle. It was designed to compete against the .450 Nitro Express and the .470 Nitro Express cartridges found in big bore British double rifles. The .458 Winchester Magnum remains to this day one of the most popular dangerous game cartridges. Most major ammunition manufacturers offer a selection of .458 ammunition for rifles chambered in the cartridge.

History

The .458 Winchester Magnum was designed for hunting dangerous game animals by emulating the performance of powerful English double rifle cartridges in a bolt-action rifle. The use of a bolt-action rifle offered hunters a cheaper alternative to the big-bore double rifle, and ammunition could be manufactured using available tooling. The .458 Winchester Magnum soon became a success as dangerous game hunters adopted the cartridge. Soon game wardens, wildlife managers, and professional hunters switched to the .458 Winchester Magnum as their duty rifle. The cartridge would become the standard African dangerous game cartridge in short order.

Ferrari 458

The Ferrari 458 Italia is a mid-engined sports car produced by the Italian sports car manufacturer Ferrari. The 458 replaced the Ferrari F430, and was first officially unveiled at the 2009 Frankfurt Motor Show. It is replaced by the Ferrari 488 GTB, which was unveiled at the Geneva Motor Show 2015.

Specifications

In Ferrari's first official announcement of the car, the 458 was described as the successor to the F430 but arising from an entirely new design, incorporating technologies developed from the company's experience in Formula 1.

The body computer system was developed by Magneti Marelli Automotive Lighting.

Engine

The 458 is powered by a 4,499 cc (274.5 cu in) V8 engine of the "Ferrari/Maserati" F136 engine family, producing 570 PS (419 kW; 562 hp) at 9,000 rpm (redline) and 540 N·m (398 lb·ft) at 6,000 rpm with 80% torque available at 3,250 rpm. The engine features direct fuel injection, which is a first for Ferrari mid-engine setups in its road cars.

Transmission

The only transmission available on the 458 is a dual-clutch 7-speed GETRAG gearbox, in a different state of tune shared with the Mercedes-Benz SLS AMG. There is no traditional manual option, making this the fourth road-car after the Enzo, Challenge Stradale and 430 Scuderia not to be offered with Ferrari's classic gated manual. It is the first mainstream model to not be offered with a manual transmission.

.458 SOCOM

The .458 SOCOM (11.63×40mm) is a moderately large round designed for a specialized upper receiver that can be mounted on any AR-15 pattern lower receiver. The 300-grain (19 g) round offers a muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ft·lbf (3,261 J).

History

Inspired by the lack of power offered by the 5.56 NATO cartridge used in the M4 carbine and the M16 rifle, the .458 SOCOM came about from informal discussion of members of the special operations community, specifically Task Force Ranger's experience that multiple shots were required to neutralize members of the opposing force in Mogadishu during Operation Gothic Serpent. Marty ter Weeme of Teppo Jutsu designed the cartridge in 2000 and Tony Rumore of Tromix was contracted to build the first .458 SOCOM rifle in February 2001. Tony Rumore fired the very first round of .458 SOCOM ammunition in the Tromix shop located in Broken Arrow, Oklahoma on February 16, 2001, at 8:30pm.

The project sponsor set forth a number of specific requirements that led to the ultimate design as it stands right now: The cartridge had to fit in the M4 carbine platform and magazines and be capable of firing heavy-for-caliber projectiles at subsonic velocity using suppressors. During the developments phase, various other cartridges were considered and proposed to the project sponsor, but rejected as not meeting all the requirements. The cartridges considered were 7.62×39mm, 9×39mm Grom, .45 Professional (which has since become the .450 Bushmaster), and .50 Action Express. At the time, the .499 LWR cartridge was still in development phase and had not been chambered commercially.

Top Gear

Top Gear and similar may refer to the following:

Television productions

Video games

Winchester Magnum

Winchester Magnum refers to a "family" of cartridges developed by the Winchester Repeating Arms Company, one of the oldest firearms manufacturers in the United States, in the late 1950s and early 1960s, all based on the same basic cartridge case. The basic case was a "short" magnum, meaning it would work through a standard (i.e.; .30-06) length rifle action rather than requiring the longer, magnum (i.e. .375 Holland & Holland) actions.

Dimensions

The dimensions of the basic case are:

Originally known as a "short" magnum as compared to the .375 H&H Magnum, this is now considered the "long" magnum since the development of the family of Winchester Short Magnums. So today you would consider the .300 Winchester Magnum to be a "long action" cartridge.

Cartridge list

The cartridges in this family are, in the order of development: