The concept of sportsmanship in hunting is very interesting to consider. Usually, sportsmanship is a concept that is equally applied to both or all competing parties. In the wild kingdom, no such thing exists. The lion does not give the antelope fair warning, a head start, or even necessarily a more-even numbered one-on-one fight. Lions will use stealth, surprise, and even team tactics to take down an antelope in a very scary chase that can result in a rather violent and merciless kill that undoubtedly causes the antelope considerable pain and suffering before it finally succombs. Should the antelope fall during a chase, the lion does not stop to help the antelope to his feet before continuing the chase. When the lion catches the antelope, she does not congratulate the antelope on his effort to get away. The lion doesn't even necessarily deliver a killing bite to spare the antelope from pain, but may start ripping him apart while still alive. It is not sporting. There is no sportsmanship. It is not even remotely fair.
Ironically, the concept of
fair chase from Boone and Crockett includes the aspect of sportsmanship, but has nothing to do with actually being fair...
https://www.boone-crockett.org/huntingEthics/ethics_fairchase.asp?area=huntingEthicsFAIR CHASE STATEMENT
FAIR CHASE, as defined by the Boone and Crockett Club, is the ethical, sportsmanlike, and lawful pursuit and taking of any free-ranging wild, native North American big game animal in a manner that does not give the hunter an improper advantage over such animals.
I don't know what world in which the Boone and Crockett people live that they would consider a scoped rifle not to be an improper advantage to use on a deer, or other game species as it is most certainly an unfair advantage. The deer does not know to be afraid and to take evasive action even if it sees a hunter at 300 yards, yet the hunter can certainly kill a deer at that distance.
When you think about it, in nature and outside of human involvement, animals usually must come into contact with one another to produce a kill. Deer and many other animals live their lives in this manner as this is how they have evolved for millions of years before humans were even a factor. Deer and other game do not understand the concept of ballistics and being killed from afar anymore than humans understood germs, bacteria, and viruses 2000 years ago. So how it is that a rifle isn't an "improper" or unfair advantage to take a game animal is beyond me...and yet it is part of the sportsmanship of the sportsman who came up with the rules.
What I am saying here is that sportmanship, as it applies to hunting, follows nothing resembling what goes on in nature, but instead is a self imposed limit on the amount unfair advantage we apply to how we take game. It seems to stride hand-in-hand with the equally murky concept of "ethics."
I don't like how several people on this forum conduct their hunts. I know that many don't like how I conduct mine. As long as they are legal and not intentionally trying to produce or allow undue suffering, then if I don't like their stuff, I simply avoid their posts and videos.