Very safe to use any kind of .38 Special ammo in your 19-3. Recommendations would be depending on the use. For general self or home defense, any +p .38 special ammo is fine. For range/practice, cheaper rounds would be fine. I load a 158 grain semi-wadcutter in .357 cases for general use in my 19-3. The load is a little hotter than recommended for .38 Special guns, but much lower than full-house .357 loads.