This is from my instruction sheet for a model 49 bodyguard, printed Oct 1978. Basically it says to stay away from LE ammo,so called plus-p-plus and plus-plus p. which were made for the U.S. Treasury department. For shooting in K frame 38 special revolvers, do not shoot it in guns made before 1958 which do not have a model number on the yoke cut out on the frame. It also says do not shoot +p+ out of J frame revolvers. Its old information and likely out of date.