A good 158 grain semi wadcutter is probably the best in a standard pressure 38 special. You do not generally have enough velocity from a standard pressure 38 special fired from a snub nose barrel to ensure expansion so use a bullet that does not need expansion to be effective.
The two last picks for SD are the LRN and the 148 WC, both are dismal performers, the wound may be fatal but I do not feel like waiting a week.
I do not see where some +p 38's would hurt if they were only used for SD and not regular practice.
My rifle and pistol are tools, I am the weapon.