Cooper Arms Model 54 Classic in 243 Winchester. The Model 54 bridges the gap between Cooper's short Model 21 and long Model 52 actions, handling cartridges like the 243 Win with an action sized to minimize excess length and weight. In Classic configuration the Model 54 delivers Cooper's signature sub-half-MOA accuracy in a trim, balanced hunting rifle. The 243 Win chambering makes it a versatile choice from prairie dogs to deer. Type: Rifle Action: Bolt-Action Caliber: 243 Winchester Capacity: 1 Year introduced: 1995, USA Weight: 58 oz Overall length: 42" Status: Active Intended use: hunting, varmint hunting