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.257 Weatherby Magnum

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Name .257 Weatherby Magnum
Type Rifle
Country United States
Bullet Diameter .257in (6.5mm)
Neck Diameter .283in (7.2mm)
Shoulder Diameter .492in (12.5mm)
Base Diameter .512in (13.0mm)
Rim Diameter .5315in (13.50mm)
Rim Thickness .051in (1.3mm)
Case Length 2.545in (64.6mm)
Overall Length 3.209in (81.5mm)
Designer Roy Weatherby
Designed Year 1944
Manufacturer Weatherby
Produced Year 1948 – present
Parent Case .375 H&H Magnum
Case Type Not Found
Rifling Twist 1 in 10in (250mm)
Primer Type Large Rifle (magnum)
Maximum Pressure 65,000psi (450MPa)
View Count 109 View