These are pellets my father modified for use on ground hogs in his backyard garden.He told me that he glued a shot pellet to the 22 cal.air pellet and that his board test showed they penetrate more.I adjusted the open sights on his air rifle for him the other day.Many pellets now shoot in the bullseye and in the same hole at about 25 ft. offhand.[URL= ]super penetrator/solid for big backyard game[/URL]