.375 Viersco Magnum
The .375 Viersco Magnum (9.5 x 87.5mm) is a rimless, magnum-length rifle cartridge designed for the hunting of large game and long-range competition shooting. The case is engineered with a wider than typical .532" or .640" magnum base, increasing case volume to improve long-range performance.
| .375 Viersco Magnum | ||||||||||||||||
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| Type | Rifle | |||||||||||||||
| Place of origin | United States | |||||||||||||||
| Production history | ||||||||||||||||
| Designer | Viersco, MFG | |||||||||||||||
| Manufacturer | Viersco | |||||||||||||||
| Specifications | ||||||||||||||||
| Parent case | Unique | |||||||||||||||
| Case type | Rimless, bottleneck | |||||||||||||||
| Bullet diameter | .375 in. (9.5mm) | |||||||||||||||
| Neck diameter | .398 in (10.11 mm) | |||||||||||||||
| Shoulder diameter | .664 in (16.86 mm) | |||||||||||||||
| Base diameter | .680 in (17.272 mm) | |||||||||||||||
| Rim diameter | .675 in (17.145 mm) | |||||||||||||||
| Rim thickness | .065 in (1.7 mm) | |||||||||||||||
| Case length | 3.445 in (87.5 mm) | |||||||||||||||
| Overall length | 4.150 in (105.41 mm) | |||||||||||||||
| Case capacity | 190 gr H2O (12 cm3) | |||||||||||||||
| Rifling twist | 1 in 10 in (254 mm) or 1 in 7 in (180 mm) | |||||||||||||||
| Primer type | Large rifle | |||||||||||||||
| Maximum pressure | 64,800 psi (447 MPa) | |||||||||||||||
| Ballistic performance | ||||||||||||||||
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| Test barrel length: 26 Source(s): Viersco Mfg[1] | ||||||||||||||||
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