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.375 Viersco Magnum
Type Rifle
Place of origin USA
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 (12.35 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 (Bad rounding hereScript error MPa)
Ballistic performance
Bullet weight/type Velocity Energy
300 gr (Bad rounding hereScript error g) SP2,840 ft/s (Bad rounding hereScript error m/s)5,304 ft·lbf (Bad rounding hereScript error J)
350 gr (Bad rounding hereScript error g) DGS2,660 ft/s (Bad rounding hereScript error m/s)5,565 ft·lbf (Bad rounding hereScript error J)
375 gr (Bad rounding hereScript error g) 3,326 ft/s (Bad rounding hereScript error m/s)9,000 ft·lbf (Bad rounding hereScript error J)
Test barrel length: 26
Source(s): Viersco Mfg[1]

The .375 Viersco Magnun (9.5 x 87.5mm) is a rimless, magnum-length rifle cartridge designed for the hunting of large dangerous game and long-range competition shooting. It is designed to provide an increase in performance over other .375-class cartridges. This is accomplished by engineering the case with a wider than typical .532" or .640" magnum base, increasing case volume. Thus, long range performance is even greater than the .408 Chey-Tac or .375 Snipe-Tac.

ReferencesEdit

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