8 Mm Cartridges Compared
Maximum muzzle velocity comparison in % of the probably most proliferated European and American 8 mm rifle cartridges out of 650 mm (25.59 in) long barrels loaded with relatively light to heavy 8 mm bullets to their C.I.P. or SAAMI (Sporting Arms and Ammunition Manufacturers’ Institute) sanctioned maximum pressures.
| Bullet weight gram (grain) | 8.23 g (127 gr) | 9.72 g (150 gr) | 11.34 g (175 gr) | 12.96 g (200 gr) | 14.26 g (220 gr) | Case capacity (%) |
| 7.92x57mm Mauser (8 x 57 IS) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| 8x64mm S | 102.7 | 102.7 | 102.8 | 102.9 | 102.9 | 110.3 |
| .325 WSM | 108.7 | 109.1 | 109.0 | 109.3 | 111.1 | 131.7 |
| 8x68mm S | 108.4 | 108.5 | 108.7 | 110.5 | 112.3 | 136.5 |
| 8 mm Rem. Mag. | 111.9 | 112.3 | 114.5 | 115.3 | 116.0 | 157.1 |
This comparison is not totally objective since the 8 mm Remington Magnum operates at 460 MPa (66717 psi, the .325 Winchester Short Magnum at 435 MPa (63,091 psi), the 8 x 68 S at 440 MPa (63817 psi), the 8 x 64 S at 405 MPa (58740 psi) and the 7.92 x 57 mm Mauser at 390 MPa (56564 psi) maximum chamber piezo pressure. Higher chamber pressure results in higher muzzle velocities.
Read more about this topic: 8×68mm S
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