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7x61 Sharpe & Hart Magnum
Type Rifle
Place of origin Oakland,California U.S.A.
Production history
Designer Philip Sharpe and Richard Hart
Designed 50s
Manufacturer Norma
Specifications
Case type rimless, belted
Bullet diameter .284 in (Bad rounding hereScript error mm)
Rim diameter .532 in (Bad rounding hereScript error mm)
Rim thickness .040 in (Bad rounding hereScript error mm)
Case length 2.394 in (Bad rounding hereScript error mm)
Overall length 3.27 in (Bad rounding hereScript error mm)
Ballistic performance
Bullet weight/type Velocity Energy
160 gr (Bad rounding hereScript error g) 3,100 ft/s (Bad rounding hereScript error m/s)3,410 ft·lbf (Bad rounding hereScript error J)
139 gr (Bad rounding hereScript error g) Hornady SST BT2,800 ft/s (Bad rounding hereScript error m/s)2,419 ft·lbf (Bad rounding hereScript error J)
175 gr (Bad rounding hereScript error g) Hornady Spire Point Interlock2,900 ft/s (Bad rounding hereScript error m/s)3,267 ft·lbf (Bad rounding hereScript error J)
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 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 & BallisticsEdit

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
Trajectory 2.6 1.9 -4.1

ReferencesEdit


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