Been there done that a few times and those bulls are on the wall and in the cook pot. It all depends on conditions and the situation and the setup. I don't need to tell a few of you guys but in all honesty some guys burn such little powder they are less proficient with a rifle at 200yrds than another guy or gal or kid at 600yrds. Heck I have seen guys having trouble loading their gun and issues with unloading. Archery well now thats another issue, how about the 20yrd quartering towards shot??? How about the 35yrd shot on the high anxiety bull or buck thats perfectly broadside? So I have a few pet peeves 1. the daylighting shots over a ridge. 2. Poor firearms handling and kill pictures with weapons pointing in non safe directions. 3. How about the wounding of an animal but then referring to it as a miss and not a cripple.
Nothing unsportsmanlike with a 600 yard shot. It however, is not for everyone.