S&W model 34 with a 4" barrel combines great sights with good accuracy and light weight. The older 63's are great revolvers, I've had two of them, but prefer the front sight on the 34 since it is all black, a tad narrower and, to me at least, provides a more precise sight picture. A few years ago our range used to have some empty welding tanks out at the 200 yard line and it wasn't that hard to hit them 4 or 5 out of 6 shots with a 34. Any 63 or 34 or going to be mighty spendy these days.
Ruger SP101 is a bit heavier at 30 ounces but I would avoid anything built in the last 3-4 years, IME Ruger's QC has gone in the toilet on that entire product line. Something before 2016 or so should be okay.
LCRx would probably be a good choice but I've never owned one so couldn't say from personal experience.
