The "troublemaker" ammo that caused all of the hub-bub with the K-framed .357 Magnum revolvers was the 125 gr. JHP in .357 Magnum chambering. During the days of the wheel gun, that was considered "a", if not "the" premium manstopper round. The same ammo loaded in .38 Special was considered fine, and in fact, any .38 Special ammo in a .357 Magnum revolver was considered okay for use. As I recall, the heavier bullet weights were okay for use without problems.

Regards,

Dave