I purchased a 3" LCRx .357 Mag at the end of 2019. Due to the events of 2020, which included a lot of work-related commitments, I didn't first shoot the gun until late 2020. 158 gr lead .38 Spl +P rounds shoot very well in it. 158 gr JHP .357 Mag rounds have quite a bit of recoil and blast. I've been working with 140 gr JHP Hornady XTP bullets and a slightly lower than max charge of W296 powder for some nicer shooting Magnum rounds. The practical accuracy of the gun at 10-20 yds is decent. I shoot my 4" GP100 .357 Mag noticeably better at 20+ yds, though. I have also polished up the internal trigger/hammer parts and installed a lighter (9 lb) Wolff mainspring for a smoother and a bit lighter DA trigger. The SA trigger is still fairly heavy, at around 7 lbs, but the letoff is smooth, with very little creep.
All in all, I find the gun to be a very good all-around compact carrying revolver.
Just for comparison, the 3" SP101 weighs 1/3 of a pound (5.7 oz, to be exact) more than the LCRx.