Considering buying a Ruger LCRx in .22 rimfire with a 3" barrel. Read a lot about the heavy DA trigger pull - 18-20# Ruger claims it is need to reliably ignite rimfire primers. My S&W 43 Kit gun doesn't have that heavy of a trigger pull, although it is probably heavier than my centerfire revolvers (I do not have a trigger pull gauge). I am not particularly bothered by the idea of a heavy DA trigger pull on a .22 rimfire revolver as I almost always shoot them single action (indeed, I shoot most of my revolvers single action) but I question the need. Is the Ruger SP101 in .22 that heavy? Others?