A few years back my FIL bought a Ruger SP101 in .32 Federal Magnum with a 3" barrel. He wanted it for protection from 2-legged critters, local roaming dogs, and to take out venomous snakes too close to the house. I squared him away after he complained THE DANGED THING WAS SO LOUD IT HURT. I did that by sending him some .32 S&W Long wadcutters, which were just as effective killing snakes but did not leave him with ringing ears. (I would have suggested a used S&W .38spl but I was not there when he bought.)
This weekend I installed a cheap Tasco red dot on his Mossberg .22LR Plinkster(1) as he found he could not see/use the iron sights. Also installed sacrificial washcloths on the stock with Gorilla tape to get his eyeball in line with the sight. Five shots later, he could put .22LR rounds into an inch at 15 yards from a rest. More than good enough for squirrels and cats trying to eat his pigeons' eggs & chicks.
As an exercise I had son & daughter clean both rifle and revolver for their grandpa. While inspecting my daughters revolver-cleaning handiwork (not bad for 10YO, about 80% as good as I would do in a hurry and good enough for most revolver shooters), I handled the Ruger SP101. It sure looks sturdily-built and of quality manufacture. Then you pull the trigger. Hell, what an awful thing. As bad as the trigger on MY grandpa's awful RG revolver in .22 Short, the one my dad and I cut up as a safety measure.
The particulars:
1. Heavy.
Not AMT DAO Backup heavy, but getting close to Kel-Tec P-11/P-40 heavy. Worse than S&W and Taurus small-frames.
2. Gritty.
The absolutely the most gritty revolver trigger I have yet squeezed. From any manufacturer. Just. Awful.
3. Return Double-Scrunch.
Let us say you throw caution to the wind, squeeze the trigger, and decide you want to do so again because you are a glutton for punishment. As you release the trigger you get a nasty scrunch after some return travel and figure it is good to fire again, only to realize that nope, it ain't. That was just the first scrunch. If you are then so foolish as to try to pull the trigger, you get a lock up and the trigger goes nowhere until you release it to return some more...and then get your second nasty return-travel scrunch. Only then can you get yourself more of that gritty trigger pull.
What the heck is up with Ruger's smaller revolvers? I have shot a Ruger Redhawk in .44mag and it had a relatively decent trigger. Not great, but pretty good. The Ruger LCR had an easy DA trigger pull, but took F O R E V E R to reset. It took long enough to be distracting and mildly unpleasant to my trigger finger, which is fine with all S&W and small frame Taurus trigger pulls. The LCR did not have the SP101's nasty grit & double scrunch, though.
All in all, I expected better from Ruger. I would steer folk toward an all-steel S&W J or K frame or even a Taurus instead of the SP101.
(1) Just don't. Buy the Ruger 10/22 from Walmart if you must buy a cheap .22LR semi-auto rifle. It is functional, but very cheaply made and not amenable to modification, gunsmithing...or even repeated dis-assembly.