I would love to shoot an old 38S&W in IDPA Revolver. I like old revolvers and old cartridges. That said if they choose to not allow it I would OK with that and I would keep shooting my Model 10 since my 625 is too long. Either way is fine I would just like to see it made very clear in the rules. Right now, as written, we can argue several cartridge are or are not SSR or ESR legal and both side have plausible interpretations of the same rule to support opposing positions.