It's an H&R 676 convertible double action six shooter. It'll be around forever and it is one crazy tack driver. The thing is accurate, accurate, accurate! The price: about $200 on Gunbroker.
Note: If you want to stick with .22 LR only, H&R made tons of guns, mostly holding 9 rounds, all of which are very reasonably priced. $150 will get you a nice one.