I have a small fleet of 686s but for putting target loads with wadcutters or SWCs downrange, I much prefer my Model 66s.
Back in the mid-70s, I bought my first new revolver, a 4" Model 19 with target trigger and hammer. I fired thousands of HBWCs out of that thing and it was very accurate. I went to my club's 25-yard indoor range two or three evenings each week with a box of 50 target loads and my goal was to put all 50 rounds into the black of a standard 25-yard pistol target off-hand. As I recall, I managed to do that three times; usually, I had one to six out of the black.
Today, my eyes don't work nearly as well and I struggle to only have six out of the black from a sandbagged rest! But I'm only just getting back into handgun shooting after about a 20-year layoff and haven't tried off-hand shooting yet.
Just don't feed any K-frame a steady diet of hot magnum fodder. They won't stand up to that kind of use like an L-frame 586 or 686 will.
Ed