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| rdfs:comment | - The .264 Winchester Magnum is a belted, bottlenecked rifle cartridge. Apart from the .257 Weatherby Magnum, it is the smallest caliber factory cartridge which uses the standard length (in ( mm)) Holland & Holland belted magnum case. It was introduced together with the .338 Winchester Magnum and the .458 Winchester Magnum as one of a series of short-cased (in ( mm)) belted magnum cartridges developed by Winchester. It was officially introduced to the public by Winchester in 1959.
- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .264 Winchester Magnum |- |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | United States |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Production history |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Specifications |- |- |- ! style="padding-right: 1em;" | Bullet diameter | colspan="2" | in (mm ) mm ) mm ) mm ) mm ) |- )
- Winchester had been manufacturing the shortened Holland & Holland cases under a contract for Weatherby for use in their .257 Weatherby Magnum, .270 Weatherby Magnum and 7mm Weatherby Magnum cartridges. While the Weatherby cases had been based on the Winchester's .30 Super cartridge, these new series of shortened Holland & Holland cases were based on the .375 Holland & Holland case which was more plentiful and hence more available. The advantages of the shortened case were two fold: the cartridge could function through the easily available standard length rifle action used by the .30-06 Springfield and the .270 Winchester and was close to the efficiency limitations of powders available at the time given the case capacity of the cartridge. Using the longer, full length .375 H&H case would no
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| btype | - BTSP
- Nosler Ballistic Tip
- Nosler Partition
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| dbkwik:publicsafety/property/wikiPageUsesTemplate | |
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| balsrc | - Conley Precision Cartridge
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| abstract | - The .264 Winchester Magnum is a belted, bottlenecked rifle cartridge. Apart from the .257 Weatherby Magnum, it is the smallest caliber factory cartridge which uses the standard length (in ( mm)) Holland & Holland belted magnum case. It was introduced together with the .338 Winchester Magnum and the .458 Winchester Magnum as one of a series of short-cased (in ( mm)) belted magnum cartridges developed by Winchester. It was officially introduced to the public by Winchester in 1959.
- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .264 Winchester Magnum |- |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | United States |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Production history |- ! style="padding-right: 1em;" | Designer | colspan="2" | Winchester Repeating Arms Company |- ! style="padding-right: 1em;" | Designed | colspan="2" | 1959 |- ! style="padding-right: 1em;" | Manufacturer | colspan="2" | Winchester |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Specifications |- |- |- ! style="padding-right: 1em;" | Bullet diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Neck diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Shoulder diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Base diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Rim diameter | colspan="2" | in (mm ) |- |- ! style="padding-right: 1em;" | Case length | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Overall length | colspan="2" | in (mm ) |- |- ! style="padding-right: 1em;" | Rifling twist | colspan="2" | 1:9 |- ! style="padding-right: 1em;" | Primer type | colspan="2" | Large rifle |- ! style="padding-right: 1em;" | Maximum pressure | colspan="2" | psi (MPa ) |- |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Ballistic performance |- style="text-align: center; font-size: 90%; background: #DEDEDE;" cellspacing="0" cellpadding="0" ! Bullet weight/type ! Velocity ! Energy |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) Nosler Ballistic Tip||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) Nosler Partition||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) BTSP||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" |- style="text-align: center; font-size: 90%;" |- | colspan="3" style="text-align: center; padding-top: 5px; font-size: 90%;" | Source: Conley Precision Cartridge |} The .264 Winchester Magnum is one of a series of short-cased (2.5in.) belted magnum cartridges developed by Winchester Repeating Arms Company, and officially introduced to the public by them in 1959. Ballistically, it is almost identical to the 6.5 x 68 (also incorrectly known as the 6.5 x 68 RWS, 6.5 x 68 Schüler or the 6.5 x 68 Von Hofe Express) and the 6.5 x 63 Messner Magnum. The .264 Win. Mag. is an excellent, potentially accurate, very flat-shooting cartridge capable of taking any game in the lower 48 US states, and one of the most powerful of all .264in (6.5mm) cartridges. When loaded with 140 grain bullets at a muzzle velocity of 3,100 ft/sec (949 m/s) it is an adequate round for deer out to 500 yards (457 meters).
- Winchester had been manufacturing the shortened Holland & Holland cases under a contract for Weatherby for use in their .257 Weatherby Magnum, .270 Weatherby Magnum and 7mm Weatherby Magnum cartridges. While the Weatherby cases had been based on the Winchester's .30 Super cartridge, these new series of shortened Holland & Holland cases were based on the .375 Holland & Holland case which was more plentiful and hence more available. The advantages of the shortened case were two fold: the cartridge could function through the easily available standard length rifle action used by the .30-06 Springfield and the .270 Winchester and was close to the efficiency limitations of powders available at the time given the case capacity of the cartridge. Using the longer, full length .375 H&H case would not have produced a great performance benefit given the powders available. This was also the reasoning behind the shortened cases used by Weatherby as DuPont's IMR 4350 had been the slowest burning powder available at the time. The .264 Winchester Magnum is a cartridge which was standardized by SAAMI, which published recommended specifications for the cartridge. SAAMI recommends a six groove barrel with a rate of twist of one revolution in , a bore diameter of and a groove diameter of with each groove having a width of . The recommended maximum pressure for the cartridge (pizeo) is .
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