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375 Supermag

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The .375 Supermag, also known as .375 Super Magnum, is a high-velocity, high-power revolver cartridge. It was developed for use in large-frame revolver designs, like those made by Dan Wesson Firearms. The cartridge is based on the .375 Winchester Big Bore rifle case, which was shortened to 1.6 inches for more efficient use in handguns. 

The .375 SuperMag is a powerful handgun cartridge developed by Elgin Gates for metallic silhouette shooting. It was designed to offer superior downrange ballistics compared to the popular .44 Magnum, with a bullet that had better aerodynamic characteristics and sectional density. The cartridge is less common than mainstream calibers and generally requires specialty firearms designed to handle its high-pressure load.


Die Sets
Lee Full-Length Sizing Die Set
Lee Breech Lock Die Set
Lee Loader
Single Dies
Full-Length Sizing Die
Sizing Die
Undersize Sizing Die
Charging Die
Precision Bullet Seating Die

Factory Crimp Die
Taper Crimp Die
Case Conditioning Tools
Case Length Gauge and Shell Holder
91320
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
90208 (#8)
Universal Press Shell Holder
90525 (R8)
X-Press Shell Holder (APP)
91541 (#8)
Pro 1000 Shell Plate
Auto Breech | Pro 4000 Shell Plate
Six Pack Pro Shell Plate
91843 (8L)
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

Breech Lock Hand Presses

Click here to view parts

From $12.00

Challenger III

From $120.00

Rifle Precision Micrometer Bullet Seating Die

From $29.00

Micrometer Adjust Screw

From $20.00

Carbide Factory Crimp Micrometer Seater Adapter

From $20.00

Primer Pocket Gauge Set

92104
$11.00