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257 Weatherby Magnum

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The .257 Weatherby Magnum is a high-velocity, flat-shooting rifle cartridge developed by Roy Weatherby in 1944. It is based on the .375 H&H Magnum case, necked down to accept a .257 caliber (6.35mm) bullet. This cartridge is known for its exceptional speed; factory loads can drive a 100-grain bullet at around 3,600 feet per second (fps), resulting in a very flat trajectory.
The .257 Weatherby Magnum is primarily used for long-range hunting of medium-sized game such as deer, antelope, and sheep. Its high velocity and flat trajectory make it well-suited for shots at varying distances, reducing the need for precise range estimation. It also has enough kinetic energy to make clean kills on these types of game.
However, its high velocity can lead to increased barrel wear compared to lower velocity rounds. Despite this, it remains popular among hunters and shooting enthusiasts who prioritize its long-range performance and terminal ballistics.

Die Sets
Lee Collet Necksizing 2-Die Set
Lee RGB Die Set
Lee Full-Length Sizing Die Set
Lee Breech Lock Die Set
Lee Ultimate 4-Die Set
Lee Loader
Single Dies
Full-Length Sizing Die
Sizing Die
Neck Sizing Die
Undersize Sizing Die
Charging Die
Seating Die
Factory Crimp Die
91225 (Collet Style)
Taper Crimp Die
Inline Bullet Feed Die
Case Conditioning Tools
Case Length Gauge and Shell Holder
91298
Quick Trim Die
91342
Presses
Reloader Press (50 RPH)
Hand Press (50 RPH)
Challenger Press (50 RPH)
Classic Cast Press (50 RPH)
Value Turret Press (250 RPH)
Classic Turret Press (250 RPH)
Ultimate Turret Press (250 RPH)
Pro 1000 Press (500+ RPH)
Pro 4000 Press (500+ RPH)
Six Pack Pro Press (500+ RPH) *Manual index only
Shell Plates and Holders
Priming Tool Shell Holder
90205 (#5)
Universal Press Shell Holder
90522 (R5)
X-Press Shell Holder (APP)
91538 (#5)
Pro 1000 Shell Plate
Auto Breech | Pro 4000 Shell Plate
Six Pack Pro Shell Plate
91840 (5L)
Inline Bullet Feed
Inline Bullet Feed Die
Inline Bullet Feed Kit
Inline Bullet Feed Magazine
Bullet Casting
Classic Bullet Sizing Kit
Breech Lock Bullet Sizer and Punch
Bullet Molds

Micrometer Adjust Screw

From $20.00

Power Grip Shell Holder

92149
$10.00

Challenger III

From $117.00

Ultimate Turret Press

From $320.00

Deluxe APP Press Kit

91898

Includes:

  • Press
  • Roller Handle
  • Priming System
  • Universal Case Feeder
  • APP Deprime Kit
  • Bottle Adapter
$155.00

Six Pack Pro Press

From $400.00