The Model 617 10-shot is the expanded-cylinder variant providing 10-round capacity in the K-frame .22 LR revolver. The wider cylinder required an enlarged frame cutout. Popular for ICORE and similar revolver competitions where maximum round count reduces mandatory reloads. Also used for small game hunting where multiple quick shots may be needed. Type: Revolver Action: Double-Action Caliber: .22 LR Capacity: 10 Year introduced: 1996, USA Weight: 44.5 oz Overall length: 9.5" Status: Active Intended use: competition, training, hunting