At one time, H&R revolvers were almost on a par with Colt or S&W, but at some point H&R opted for quantity rather than quality and chose to bypass the necessary investment and upgrade work needed to make real improvements. The result was a gradual but continuous decline in quality as their design became more and more obsolete, mainly in the lockwork.
I can't go into detail here,, but from c. 1920 on, H&R "marched in place" with few real changes to an obsolete system. Some of the design almost ensured excess wear, like the poorly designed hand and ratchet, the always troublesome cylinder stop system, and of course the use of fragile flat springs.
The "top of the line" for many years was the Model 999 breaktop, which looked good, and generally worked OK, but which whose quality manufacture required more precise equipment than H&R had or chose to invest in.
The revolver models mentioned are decent utilitarian designs, OK as "woods" guns as long as they are recognized as relatively short service guns. Bad? No, but not guns that will be expected to be working into the next century.
And, of course, the current maker of the H&R line is actually making few new guns, beyond using up leftover parts from 20th century production, so new gun (and parts) production is problematical.