7.5×57mm MAS
The 7.5×57mm MAS or 7.5×58mm mle 1924c was a short-lived French rifle cartridge that was introduced in the mid-1920s to replace the 8×50mmR Lebel, although it itself was soon replaced with the 7.5×54mm French round, that served the French for decades to come until France, along with the rest of NATO, adopted the standard NATO calibers, 5.56×45mm NATO and 7.62×51mm NATO.
| 7.5 mm MAS | |
|---|---|
| Type | Rifle |
| Place of origin | France |
| Service history | |
| Used by | France |
| Production history | |
| Produced | 1924 to 1929 |
| Specifications | |
| Parent case | 6.5×55mm |
| Case type | Rimless, bottleneck |
| Bullet diameter | 7.8 mm (0.31 in) |
| Neck diameter | 8.6 mm (0.34 in) |
| Shoulder diameter | 11.2 mm (0.44 in) |
| Base diameter | 12.2 mm (0.48 in) |
| Rim diameter | 12.2 mm (0.48 in) |
| Rim thickness | 1.4 mm (0.055 in) |
| Case length | 57.6 mm (2.27 in) |
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