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Common uses: Hunting, Big Game
| Type | rifle (centerfire) |
| Typical load | 180gr Norma Oryx |
| Muzzle velocity | 2690 fps |
| Muzzle energy | 2893 ft-lb |
| Published G1 ballistic coefficient | 0.354 |
| Case length | 55.6 mm |
| Overall length | 78 mm |
| Range (yd) | Velocity (fps) | Energy (ft-lb) | Drop (in) |
|---|---|---|---|
| 0 | 2690 | 2892 | -1.5 |
| 100 | 2437 | 2374 | 0 |
| 200 | 2199 | 1933 | -4.4 |
| 300 | 1974 | 1558 | -16 |
| 400 | 1764 | 1244 | -36.6 |
| 500 | 1572 | 987 | -68.3 |
At 1,000 yards, 7.5x55 (180gr at 2690 fps, 100 yd zero, standard conditions) has a modeled come-up of about 49.8 MOA / 14.5 MIL, retaining 986 fps (subsonic).
| Range (yd) | Velocity (fps) | State | Drop (in) | Elev (MOA) | Elev (MIL) |
|---|---|---|---|---|---|
| 300 | 1974 | Supersonic | -16.0 | 5.1 | 1.48 |
| 400 | 1764 | Supersonic | -36.6 | 8.7 | 2.54 |
| 500 | 1572 | Supersonic | -68.3 | 13.1 | 3.80 |
| 600 | 1399 | Supersonic | -114.3 | 18.2 | 5.29 |
| 700 | 1252 | Transonic | -178.0 | 24.3 | 7.06 |
| 800 | 1135 | Transonic | -263.9 | 31.5 | 9.16 |
| 900 | 1050 | Subsonic | -376.8 | 40.0 | 11.63 |
| 1000 | 986 | Subsonic | -521.3 | 49.8 | 14.48 |
Extended predictions beyond 500 yards are modeled from the same G1 engine — useful for initial DOPE, but outside the 500-yard manufacturer-table validation audit. Confirm with observed DOPE, especially near transonic.
A retained-energy reference only — not a shoot/don't-shoot distance. Real effective range depends on your accuracy, shot placement, bullet construction, and conditions. The ~1,000 ft-lb (deer-sized) and ~1,500 ft-lb (elk-sized) figures are commonly cited rules of thumb, not standards.
Your barrel, ammunition lot, and conditions will differ — always verify against the manufacturer's data and your own rifle.
Ballistically comparable to the .308 Winchester and .30-06. Swiss military ammunition is known for its tight manufacturing tolerances and accuracy. It is commonly encountered in surplus Schmidt-Rubin rifles, especially the K31, and is suitable for medium and large game at moderate ranges. Ammunition is relatively scarce and costly outside of surplus, and few modern factory rifles are chambered for it, favoring handloaders and collectors.
Introduced as the GP 11 (Gewehrpatrone 1911) in 1911 for the Swiss Army. The cartridge's lineage traces to the Gewehrpatrone 1890 (7.5x53.5mm), designed by Lt. Col. Eduard Rubin. It was used with the Schmidt-Rubin straight-pull action invented by Rudolf Schmidt, in the Model 1911 rifles and 1896/11 conversions. The GP 11 used a spitzer bullet with non-corrosive priming and served as Switzerland's standard rifle and machine-gun cartridge through much of the 20th century, including the K31 carbine.
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