The .338 Lapua Magnum case necked to 7mm, optimized for extreme long-range and ELR competition. Drives heavy, high-BC 7mm bullets at velocities competitive with the biggest commercial magnums while fitting the .338 Lapua bolt face. A serious ELR and F-Open competition cartridge.
Type: Rifle
Introduced: 2012, United States
Parent case: .338 Lapua Magnum
Standardization: Wildcat
Bullet diameter: 0.284" (7.21 mm)
Max pressure: 62,000 PSI
Rim type: Belted
Primer: Large Rifle Magnum
Typical twist rate: 1:9
Muzzle velocity: 3050–3250 fps
Muzzle energy: 3300–4570 ft-lbs
Effective range: 400 yd
Common bullet weights: 160, 168, 175, 180, 195 gr
Primary use: target, competition
Production status: Active
Also known as: 7mm Practical Magnum · 7 Practical · 7mm/.338 Lapua
History: Developed in the early 2010s by long-range competition shooters seeking a 7mm cartridge that could push 180–195 grain bullets at 3,100+ fps from the proven .338 Lapua case. Gained traction in ELR (extreme long-range) competition and F-Open shooting. Custom chambering only; no factory ammunition.