I use the pipe gun to shoot the gunners I guess (really need more information).

Depends. What location specifically?

Regardless, i would run into buildings, finding cover, and quickly looting for weapons, armor, stimpacks. Hopefully i would find mines and explosives to use against them. And then fast travel home for sure lol

Less imagine your in survival

Also you are in gunner territory they probably already scrapped and cleaned the place

Honestly i would leave lol, theres no shot for surviving that

Smart answer

I would try to get to the top of the building, then signal a Vertibird to get me the hell out of there.

Here comes the big brain strat from the one guy who dumps all his stats into Charisma and Intelligence.

First I intimidate the Gunner with the rocket launcher, and order him to fight the others. Despite the fact that I am only holding a pipe pistol and realistically can't injure him any more than his compatriots, he fights them anyway. While the Gunners are distracted, I then sneak into the security office next to the lobby and use my hacking skills to activate and take control of the turrets and Protectron to eliminate whoever survived the rocket launcher dude, since I doubt he could've defeated them on his own.

I then cower heroically behind the desk until the battle is over, and if there are still a few Gunners left, I make one of them turn on the others using my intimidation skills. Then once he finishes off the last enemy, I walk away.

And then all of reality crashes because I went into Downtown Boston.

im assuming you're low level right? theres no way youre like lvl 50 with JUST. a pipe pistol, 3 bullets, and leather armor.

Also is this a hypothetical question or are you legit playing f4 rn and thats the situation youre in

No i am level 161 and have enough mini nuke to destroy every faction the fallout universe and i also have completed every quest and i have marine armor