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338 Weatherby RPM

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The .338 Weatherby RPM (Rebated Precision Magnum) is a rifle cartridge developed by Weatherby Inc. Introduced in 2020, it is designed for high performance in lightweight rifles. The cartridge features a rebated rim, which is narrower than the case body, and allows for a slimmer action while maintaining the capability to handle higher pressures.
The .338 Weatherby RPM is known for its flat trajectory and powerful performance, making it suitable for hunting big game like elk, moose, and bears. It can achieve muzzle velocities exceeding 2800 feet per second with considerable energy retention, which translates to effective long-range performance. The rebated rim design helps manage recoil and ensures reliable cycling in lightweight bolt-action rifles.
Weatherby designed this cartridge specifically for their Mark V Backcountry and Backcountry Ti rifles, aiming to provide hunters with a high-power, long-range option without the added weight usually associated with magnum cartridges. This combination of power and lightweight design makes the .338 Weatherby RPM particularly appealing to backcountry hunters who need to hike into remote areas.

Die Sets
Lee Collet Necksizing 2-Die Set
Lee RGB Die Set
Lee Full-Length Sizing Die Set
92036
Lee Breech Lock Die Set
Lee Ultimate 4-Die Set
Lee Loader
Single Dies
Full-Length Sizing Die
91914
Ez X Expander: SE2360
Sizing Die
Neck Sizing Die
Undersize Sizing Die
Charging Die
90194 (Long Charging Adapter)
Seating Die
92126
Factory Crimp Die
92038 (Collet Style)
Taper Crimp Die
Inline Bullet Feed Die
Die Accessories
Micrometer Adjuster
92215
Guided Decapper
Case Conditioning Tools
Case Length Gauge and Shell Holder
90493
Quick Trim Die
92037
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)
Shell Plates and Holders
Priming Tool Shell Holder
90202 (#2)
Universal Press Shell Holder
90519 (R2)
X-Press Shell Holder (APP)
Pro 1000 Shell Plate
Auto Breech | Pro 4000 Shell Plate
Six Pack Pro Shell Plate
91836 (2L)
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