Back in the early '80's a fella left a S&W 629 with me for a couple of years. He also left a box or so of "special ammo" with me. This ammo had a small primer with yellow paint inserted in the "hollow" of a hollow point. He called them "exploders" and said that they had some shotgun powder under the primer. I can tell you that they were exploders. Any one of you guys ever hear of such a thing, or did this fella make them up himself.