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375 Remington Ultra Magnum

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The .375 Remington Ultra Magnum (RUM) is a high-power rifle cartridge designed by Remington Arms. Introduced in 2000, it is part of Remington's Ultra Magnum series, known for its high velocity and significant energy. The .375 RUM is based on the .404 Jeffery case but modified to achieve higher performance.
Specifications:
- Bullet diameter: .375 inches (9.5 mm)
- Case length: 2.850 inches (72.4 mm)
- Overall length: 3.600 inches (91.4 mm)
The .375 RUM is capable of firing bullets weighing between 200 and 350 grains at muzzle velocities exceeding 2,500 feet per second (fps), making it suitable for hunting large and dangerous game, such as African big game (elephants, Cape buffalo) and large North American game (bears, moose). Its high velocity and energy provide excellent penetration and stopping power.
Given its power, the .375 RUM also generates significant recoil, which may be challenging for some shooters to manage. It's primarily used by experienced hunters who need a cartridge capable of taking down large and potentially dangerous animals at various distances. This cartridge is less commonly used for target shooting due to the recoil and cost of ammunition.

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
Taper Crimp Die
Inline Bullet Feed Die
Case Conditioning Tools
Case Length Gauge and Shell Holder
Quick Trim Die
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
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