So many little kids and with there inexperienced opinions,  A air rifle is ALOT more humane than shotgun, For a start it really isnt cricket to shoot a still target with a shotgun your just gonna fill it with lead which is totally useless..  and you really need to be pretty skilled to hit a rabbit with a shotgun ( to kill it humanely )   With a decent air rifle and scope youll be able to pick them off easily (If you hit them in the right spot) and they'll die instantly