I'd go with the Ruger Single Six convertible. Would shoot the 22LR cyilnder for fun and practice and have the oportunity to swap to 22mag if need be. The mag is not ear friendly and ammo has been very hard to locate in the stores.
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Had my single 6 for 25+ years. It's a great gun. As to 22MAG ammo, it is hard to find and when I do find it , it costs too much.