I've been playing around with various handguns lately, and the latest has been an old S&W model 29 (it may be another variant), it is a 10 5/8" barrel silhouette model. I shot 8 through 9.5 grains of american select powder behind a 210 grain SWC hollow point. These were rather light loads, but I had problems early. This gun has been shot only a few times a year, and this is the first time I've gotten to try it. The first 3 shots were touching, then a flyer, and the last went click. I opened the gun up, and found it had skipped the last one. I shot my next 5, and it skipped every other. I repeated it a 3rd time, before stopping. This was shot slowly, single action, from a sandbag. I noticed the gun has some very minor cylinder end play, but did not measure it. I've been reading about cylinder skipping when shooting fast, but never shooting groups, especially from light loads. Any ideas? The last 5 I watched carefully, and when cocking the hammer, it only goes over to the next cylinder. When it skips, it seems to be during firing.