For those who like .22RF cal. N frames, there were 10 Triple locks made in .22RF cal. by S&W with 10 round cylinders. ( See "American Rifleman, Nov. 1953 ) The pictured gun in the Rifleman is a service sighted gun, that appears to have 8 chambers in the cylinder however in conversations with Carl Hellstrom at the time, he noted a special order for 10 target models. They had a drift rear sight and he surmised that they were probably intended for the Bisley matches in England where adjustable rear sights were not permitted in their matches. Also see a followup letter in the Dec. 1988 American Rifleman., p. 14. Question for Pre-WW2 N frame collectors: How many different calibers were manufactured by S&W for Pre-WW2 N frames, both steel & alloy ? ( I have a list of 14 cals.) Ed.