I shot the first guy in his hand, thinking he would drop his scalpel. Instead he crumbled in death hilariously from the smallest bullet wound. Oh well. Let the other two live.
I aimed my revolver at the scalpel surgeon and waited for him to react, then lowered it. I raised my gun again and walked right up to the guy. Nothing happened. I backed up a bit and kneecapped him. He crumbled to the ground as if I'd shot him in the head, and I laughed. The game really shouldn't have made me laugh right there.
Gun out, I approached Ellie, and the other doctors didn't make a move, so I let them be. I had no intention of killing any of them. We still needed them working on a cure. After all I'd seen of humanity and myself through this journey, I'd already been feeling that maybe we didn't deserve a cure. If it came down to saving Ellie or saving the people I'd encountered from Boston to Salt Lake City, then Ellie's life was worth more.
There was a point in the sewers outside Pittsburg when I was running around with Sam where I tried to use gunfire to lure in Clickers, and it did nothing. I assumed firing off a shot wouldn't faze the doctors, and didn't consider that I didn't need to conserve ammo anymore.