There certainly was/is such an animal. With the influence of Walter Roper, a national and international Bullseye shooting champ, gun designer and gun smith - who H&R had retained around 1930 or so to improve their SINGLE SHOT TARGET PISTOL (later known as Model 195), H&R offered what was claimed to be the finest target shooting revolver in the world in 1938. It was a refinement of the SPORTSMAN SINGLE ACTION Model 199 as devised and designed by Roper. This model was named the ULTRA SPORTSMAN Model 777. It was completely hand assembled from specially selected parts that were specially hardened and hand honed; single action lock work with a factory set trigger pull "weight" of 2.5 to 3 lbs; short hammer throw and very fast lock time; had special cut rifling; fully adjustable front and rear sights (similar to the Model 199); 9 shot cylinder was exact length of the then factory standard OAL for .22lr cartridge - to prevent any "bullet jump" in an extended cylinder; built on the "Rice" type frame - eleven (11) different style monogrips were offered; had a unique vertical cylinder release lever on the right side of the frame. Production of this model was fairly short lived (perhaps less than a year - sometime in 1938 into early 1939) and very limited. I have seen s/n 's slightly over 1000 - total production is estimated at less than 1200 pieces. Serial numbered in its own range with serial number prefix starting with "U" - for ULTRA. I don't recall exact price - but it approached $50 and may have been more of a special order item than production piece.
Dropped in early 1939, the Model 777 was replaced by the EUREKA SPORTSMAN Model 196 - which was a further refinement of the Target shooters Revolver - and while incorporating some features of the 777, included innovative and unique features on it own right. The EUREKA was touted as the finest target revolver ever made - and more expensive than the 777. Approx. 300 of the Model 196s were produced. This model presents an entire story unto itself. If interested, I can provide details under a separate heading.
Current retail value of the Model 777 can run as high as $800+ for a pristine, mint example - (no NIB pieces have been observed) with fitted case and another $150 or so. Lesser condition pieces will sell for what ever the seller can get. This model does not show up very often for sale and is considered one of the top desireable items for an H&R collector. I paid close to $800 for my 98% example about 10 years ago, with the fitted case (no pics of the case, right now.) See below for pics of this model.