Strange moans in the trees

You hear strange gurgles and moans, like people screaming threw ripped open phlegm filled throats. You get your uncle's shotgun from his bedroom closer. It's loaded. It holds 12 shots and it is double barreled. You go out into the trees to investigate. You find a couple of men staggering. Blood all over there clothes. One of them has part of his rib cage showing. You order them to stop where they are but when they see you they start rushing your way, arms straining out with need. One of them trips and falls. The other one keeps coming, mouth snapping open and shut like a hungry machine. You give him both barrels. His head and a large part of his upper torso are blown into heavy wet confetti. The body falls motionless to the ground. No death twitches, like a machine that has its plug in pulled from the wall. You action back the shotgun and shot the other one in the leg. Blowing the leg apart leaving a jutting bone near the hip. He does not enough cry out in pain. He struggles to get back up and he keeps falling down again. You blast a single round into his belly. Most of his lower torso is severed, hanging on by the spinal cord and stretched pulls of meat and muscle. He still seems like he felt nothing. He still struggles to crawl to you. The next round blows his head apart and he falls motionless beside the other.