I pretty much agree, but you don't have to be awfully well trained to have fun at Long Range. A paper target doesn't care if you shoot a seven, but a wounded animal or even taking a substantial risk of wounding one is unsportsmanlike.
A Master class target shooter of my acquaintance took some experienced deer hunters to the range. Even from a steady position, they were pretty much all done by 300 metres. I recently heard the Rest Of The Story about such a guy's 450 yard bragging elk kill. A lot more luck was involved than the basic description mentions.