7 mm Cartridge

The 7mm is a member of the belted magnum family, who’s purpose was to provide headspace control while easing cartridge extraction. This makes it a desirable choice for hunting dangerous game. It is a popular choice on the Western plains of the US, as well as for use on plains game in Africa.

Drawn from premium American-made brass cups, these casing are rigorously tested to ensure unparalleled durability and dependability, each casing undergoes rigorous in-line and post- production quality assurance testing to ensure a flawless casing.

Standard casing dimensions and tolerances have been modified to achieve maximum performance. Jagemann™ Sporting Group’s in-house tooling and engineering capabilities provide the ability to customize casing dimensions for use with specific projectiles. We can meet your needs.

Contact us for more information.


Type: Rifle
Date of Origin: 1912 (parent case is .375 H & H Magnum)
Case Type: Belted Magnum
Neck Diameter: .315 in (8.0 mm)
Shoulder Diameter: 491 in (12.5 mm)
Base Diameter: .512 in (13.0 mm)
Rim Diameter: .378 in (9.6 mm)
Base Thickness: .045 in (1.1 mm)
Case Length: 2.5 in (64 mm)
Primer Type: Large rifle magnum
Max Pressure: 61,000 psi (420 MPa)


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Manitowoc, WI 54220


(800) 998-6901