| 7x61 Sharpe & Hart Magnum | |
| Origin: | Oakland, California, U.S. |
| Type: | Rifle |
| Designer: | Philip Sharpe and Richard Hart |
| Design Date: | 50s |
| Manufacturer: | Norma |
| Case Type: | rimless, belted |
| Bullet: | .284 |
| Rim Dia: | .532 |
| Rim Thick: | .040 |
| Case Length: | 2.394 |
| Length: | 3.27 |
| Bw1: | 160 |
| Vel1: | 3100 |
| En1: | 3410 |
| Bw2: | 139 |
| Btype2: | Hornady SST BT |
| Vel2: | 2800 |
| En2: | 2419 |
| Bw3: | 175 |
| Btype3: | Hornady Spire Point Interlock |
| Vel3: | 2900 |
| En3: | 3267 |
| Balsrc: | Hornady Handbook of Cartridge Reloading |
The 7×61mm Sharpe & Hart Magnum belted cartridge (A.K.A. 7mm S&H Super[1]) was developed by Philip B. Sharpe and Richard (Dick) Hart in the 1950s. Some articles claim it was based on the .300 H&H Magnum case,[1] [2] while others claim it was based on the 7x61 MAS M1907 case.[3] [4]
In 1953 Sharpe & Hart traveled to Scandinavia, where they developed the cartridge.[2] [4] Schultz & Larsen of Denmark chambered the cartridge in their bolt-action rifles. Norma manufactured commercial ammunition, but later discontinued the line. While the 7×61mm S&H proved to be popular, mostly outside of the United States,[1] it led was overshadowed once the 7mm Remington Magnum was released.[2] While commercial brass is no longer produced on a large scale, ammunition and cases are available from some custom manufacturers.[5] [6] Reloaders have a variety of bullets to choose from, and Hornady lists load data for the cartridge.[4] Reloaders should be aware of whether their rifle does, or does not, have freebore before using load data developed with more modern components.[7] Cases can also be formed from 7mm Remington Magnum cases.[8]