54 caliber version of the Lyman Great Plains Hunter with a 28-inch barrel and single trigger. A sporter-stocked hunting configuration of the Great Plains Rifle series optimized for large-game hunting in primitive firearms seasons. Percussion ignition. Type: Rifle Action: Single-Shot Caliber: 54 Cal Capacity: 1 Year introduced: 1993, USA Weight: 112 oz Overall length: 46" Status: Active Intended use: traditional, hunting