I would go with wax bullets. I have a .38 that is too sketchy to put lead through, but i use wax bullets from time to time in the yard. It is simple and cheaper than plastic. All you do is take a hundred or so empty sized cases and set them aside. Then melt some paraffin wax into a pie tin or jelly roll pan if you are making a big batch. I go for about 1/3 inch deep give or take... whatever floats your boat.
Then either stand the cases up in the hot wax before a film forms or wait till the wax is solid all the way through, but still soft, then push them in cookie cutter style. Either way, let the wax cool till it is brittle and pop the cases out. You should have nice little wax wad cutters
The outside of a few cases might need a little wipe, but not much. Next, prime and shoot. In my experience, the bullets stays together well and flies straight enough for the 10-20 feet i shoot them. They can usually pop holes in empty cans, but they may just dent a water filled can.
I have seen people recommend drilling out the flash holes to keep the primer from backing out, but i have not had this problem, so i have kepts the cases stock.
I jave also seen people reommend recipes with greases added to the paraffin, but it has worked fine for me without anything added.