One of the most realistic gunfight scenes was in Clint Eastwood’s unforgiven.
To start with, a man is shot in the belly by the assassins, in the open. Both groups are keeping their heads down. The shot man is incapacitated, and suddenly very thirsty because of being shot in the belly, a realistic thing that happens. So he is shouting for water, but his friends are too scared to go out and get him.
Finally, the assassins yell out to the other side to give him some water, and that they won’t shoot. But this is horrible advice, as giving someone with a belly shot water almost guarantees they will die.
Eventually the assassins just leave.
From the point of view of pure realism, that rocked. Along with another assassination of a protected man, who made the fatal mistake of going by himself to the outhouse. They shot him while he was sitting on the seat.
He went as he went.
I was going to post about Unforgiven as well. One of the reasons it is one of my favorite movies is that it never forgets that real violence is not pretty or glamorous, and changes everyone involved.