7×61mm Sharpe & Hart
| 7x61 Sharpe & Hart Magnum |
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| Type |
Rifle |
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| Place of origin |
Oakland,California U.S.A. |
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| Production history |
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| Designer |
Philip Sharpe and Richard Hart |
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| Designed |
50s |
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| Manufacturer |
Norma |
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| Specifications |
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| Case type |
rimless, belted |
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| Bullet diameter |
.284 in (7.2 mm) |
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| Rim diameter |
.532 in (13.5 mm) |
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| Rim thickness |
.040 in (1.0 mm) |
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| Case length |
2.394 in (60.8 mm) |
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| Overall length |
3.27 in (83 mm) |
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| Ballistic performance |
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| Bullet mass/type |
Velocity |
Energy |
| 160 gr (10 g) |
3,100 ft/s (940 m/s) |
3,410 ft·lbf (4,620 J) |
| 139 gr (9 g) Hornady SST BT |
2,800 ft/s (850 m/s) |
2,419 ft·lbf (3,280 J) |
| 175 gr (11 g) Hornady Spire Point Interlock |
2,900 ft/s (880 m/s) |
3,267 ft·lbf (4,429 J) |
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Source(s): Hornady Handbook of Cartridge Reloading |
The 7x61mm Sharpe & Hart Magnum belted cartridge (7mm S&H Super) was developed by Philip B. Sharpe and Richard (Dick) Hart in the 1950s and based on the .300 H&H Magnum case.
In 1953 Sharpe travelled to Scandinavia and the outcome of this trip was that
Schultz & Larsen of Denmark chambered the cartridge in their bolt action rifles. One example being the model 54J, which featured rear locking lugs and a fully enclosed bolt face. while Norma started to manufacture commercial ammunition according to the designers specifications. But today the cartridge requires hand-loading. However hand-loaders have a variety of bullets to choose from, and Hornady lists load data for the cartridge. Brass is still available, or can be fire-formed from 7mm Remington Magnum cases.
Usage & Ballistics
While the 7x61 S&H Magnum is a good cartridge, it was overshadowed in the United States by the pre-existing 7 mm Weatherby Magnum. Never a popular cartridge in the U.S., when the 7 mm Remington Magnum cartridge was introduced it spelled the demise of the 7x61 S&H.
Performance for 175 grain 175 grain Spire Point Interlock bullet
| 100 yd | 200 yd | 300 yd |
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| Trajectory |
2.6 | 1.9 | -4.1 |
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References