I have a Model 39-2 that has recently started acting up. My son had it out today and reported numerous failures to eject, using three different magazines and several different brands of ammo. As he describes it, with the mags loaded to capacity, it fires and ejects fine until the last two to three rounds in the mag. it happens with the original mag, one aftermarket mag and with a newer, stainless 9-round mag. The mag springs have all been replaced, we've tried different weight recoil springs and it still continues. What happens is best described as a stove pipe jam, but the offending case ends up mouth down, rather than up.
Anyone have an idea where the problem might lie? Could there be a problem with the extractor not getting a good grip on the case? It looks OK, the hook not broken or chipped, so I don't know what to look for. I've had this thing for probably 30 years or so, never really shot it a whole lot, and it just started acting up. Might it be worth checking with S&W about sending it in for a check up?