I just wanted to tell y'all about my buddy's project. He wanted something to shoot wasps with, on the fly. He lives in the country, so it's not bothering anybody. He went around to the local pawn shops to find a "beater" .38 and bought a RG with a 4 inch barrel. He takes some of the old Speer plastic bullet cases, and nearly fills them with Kosher salt. He then takes scotch tape and covers the case and trims the tape. Kosher salt has bigger crystals than regular table salt, so it's more effective, but still does no damage to anything other than the intended insect. So far he's bagged 8 of them. He tried to get a pattern on a sheet of paper, but it won't go through it. I told him to try a Kleenex.