My partner and I have done the jack rabbit hunt once so far this summer up in the Pawnee National Grasslands with a 416 Rigby and a 458 Lott. It is amusing and it does sharpen accuracy and more importantly quickness.

For me personally, the practice on elk is for building a personal, first hand, gut level, internalknowledge of the slamming, penetrating, killing power of the cartridgeon fair sized NA game without relying an other peoples opinions (frequently not from their actual experience but mere guessings), articles, reloading manual write-ups or dirt bank/paper target results.