I made up a few loads for my .38 in lieu of being able to track down any CCI shells, and without using and reloading equipment (haven't got the full setup yet).
I took a few A-merc (crappy ammo) .38spl target LRN rounds, pulled the bullets but kept the powder charge. I then used an empty .38spl case as a sort of cookie cutter and made some sytrofoam wafers to use as over and under shot wads. the rest is pretty basic, put one wad firmly over the powder, fill the case to within about 1/8 or maybe 1/4 of the top with shot, then push the second wad over the shot to hold it in. Seal it with something like wax or super glue (melts the styrofoam a bit, FYI), and there you go, cheap easy effective handgun shot rounds.
I used #6 shot in the .38spl loads, but using a smaller bore gun it would probably be better to use #8 or #9 shot. The spread on mine was about 7 inches form 10 feet out of a 2" barrel, the pattern being totally acceptable for snake or rat sized targets.