Cooper Arms Model 21 Classic in 7mm-08 Remington. The 7mm-08 — a 308 Winchester case necked to 7mm — is one of the most efficient deer cartridges ever developed, combining mild recoil with excellent sectional density and long-range performance. Cooper's Model 21 platform amplifies these inherent advantages with a sub-half-MOA accuracy guarantee. An ideal pairing of cartridge and action for the serious deer hunter. Type: Rifle Action: Bolt-Action Caliber: 7mm-08 Remington Capacity: 1 Year introduced: 1991, USA Weight: 58 oz Overall length: 41.5" Status: Active Intended use: hunting