The .375 Ruger (9.5 x 65.5mm) is a rimless, standard-length rifle cartridge designed for the hunting of large dangerous game. It is designed to provide an increase in performance over the .375 H&H cartridge, yet to be chambered in a standard length action rifle. The cartridge was designed by Hornady and Ruger in partnership and released commercially in 2007 and chambered in the Ruger Hawkeye African and the Ruger Hawkeye Alaskan rifles.
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| - The .375 Ruger (9.5 x 65.5mm) is a rimless, standard-length rifle cartridge designed for the hunting of large dangerous game. It is designed to provide an increase in performance over the .375 H&H cartridge, yet to be chambered in a standard length action rifle. The cartridge was designed by Hornady and Ruger in partnership and released commercially in 2007 and chambered in the Ruger Hawkeye African and the Ruger Hawkeye Alaskan rifles.
- The .375 Ruger is a rifle cartridge co-developed between Hornady and Sturm, Ruger & Co. in 2006. The .375 Ruger, released in 2007, was intended to improve upon the .375 H&H cartridge, the only cartridge of the same calibre.
- The .375 Ruger uses a unique case designed by Hornady and Ruger. The case is of a rimless design having the base and rim diameter of which is the same diameter of the belt on belted magnum cases based on the .300 H&H Magnum and .375 H&H Magnum. This allows the cartridge to have a greater case capacity than a belted magnum case given cases of equal length. As Ruger intended the cartridge to be chambered in standard length bolt action rifles the case length was kept to which is only longer than the .270 Winchester case. The maximum overall length of the cartridge is which is similar to the maximum overall length to standard length cartridges such as the .338 Winchester Magnum or the .30-06 Springfield. Unlike Remington Ultra Magnum cartridges, the Ruger Magnums can be chambered in standard l
- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .375 Ruger |- |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | USA |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Production history |- ! style="padding-right: 1em;" | Designer | colspan="2" | Sturm, Ruger |- ! style="padding-right: 1em;" | Designed | colspan="2" | 2007 |- |- |- |- | Specifications |- mm ) mm ) mm ) mm ) mm ) mm ) mm ) mm ) |- |- |- |- |- |- |- | Ballistic performance g) m/s)
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| BW
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- 270(xsd:integer)
- 300(xsd:integer)
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| Velocity
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- 2840(xsd:integer)
- 2900(xsd:integer)
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- 4465(xsd:integer)
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- 4835(xsd:integer)
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| vel
| - 2633(xsd:integer)
- 2660(xsd:integer)
- 2698(xsd:integer)
- 2840(xsd:integer)
- 2989(xsd:integer)
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| abstract
| - The .375 Ruger (9.5 x 65.5mm) is a rimless, standard-length rifle cartridge designed for the hunting of large dangerous game. It is designed to provide an increase in performance over the .375 H&H cartridge, yet to be chambered in a standard length action rifle. The cartridge was designed by Hornady and Ruger in partnership and released commercially in 2007 and chambered in the Ruger Hawkeye African and the Ruger Hawkeye Alaskan rifles.
- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .375 Ruger |- |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | USA |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Production history |- ! style="padding-right: 1em;" | Designer | colspan="2" | Sturm, Ruger |- ! style="padding-right: 1em;" | Designed | colspan="2" | 2007 |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Specifications |- |- ! style="padding-right: 1em;" | Case type | colspan="2" | Rimless, bottleneck |- ! 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;" | Rim thickness | 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;" | Primer type | colspan="2" | Large rifle |- |- |- |- |- |- |- ! 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) SP||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) SP||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) RN||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%;" | Test barrel length: 23Source: Guns & Ammo |} The .375 Ruger is an unbelted, standard-length rifle cartridge designed for large game. Case capacity is slightly greater than the .375 H&H Magnum yielding very similar performance. Hornady published results for the .375 using a 270 grain bullet are 2840 ft/sec (865.63 m/s).
- The .375 Ruger uses a unique case designed by Hornady and Ruger. The case is of a rimless design having the base and rim diameter of which is the same diameter of the belt on belted magnum cases based on the .300 H&H Magnum and .375 H&H Magnum. This allows the cartridge to have a greater case capacity than a belted magnum case given cases of equal length. As Ruger intended the cartridge to be chambered in standard length bolt action rifles the case length was kept to which is only longer than the .270 Winchester case. The maximum overall length of the cartridge is which is similar to the maximum overall length to standard length cartridges such as the .338 Winchester Magnum or the .30-06 Springfield. Unlike Remington Ultra Magnum cartridges, the Ruger Magnums can be chambered in standard length bolt action rifles. This allowed Ruger to chamber the cartridge without extensively redesigning their M77 rifle platform to adopt them to the new Ruger cartridge. While the .375 H&H Magnum is longer than the .375 Ruger, the latter cartridge has a greater case capacity than the Holland & Holland cartridge. This is due to the .375 H&H Magnum having a long tapered body while the .375 Ruger follows modern cartridge designs in that it has very little taper and a sharper shoulder. The case capacity of the .375 Ruger is 99.0 gr. of water (6.43 cm3) while the .375 H&H Magnum has a case capacity of 95.3 gr. of water (6.19 cm3), an increase of 4%. Image:SAAMI375Ruger002.png Cartridge standards for the .375 Ruger was issued by SAAMI in June 2007. SAAMI recommends a 6 groove barrel having a bore Ø of and a groove Ø of with a groove width of . The recommended rate of twist is one revolution in . Recommended maximum pressure for the cartridge is .
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