Make sure you're spending points in the gun you're using, for the bonuses. Although I suspect that the shotgun is the superior clearing weapon even with no points, just because it's so easy to headshot with it and the point blank damage is so extreme. Use the barrel choke mod to focus the damage and you won't use much ammo.
We should probably use more junk turrets too. Especially for blood moons, there's no reason not to use one. The ammo is just plain iron. They're helpful when scavenging but you end up needing to lure zombies to it (that said, they have also saved my bacon before when I got an unexpected flood and was able to fall back and get some help from the turret I left in the front entrance). The turrets are a lot nicer with points in it but I find them useful even with no points. It's basically free damage and the zombies never attack it. Turrets can be modded with the ammo barrel mod so you don't have to pick them up so much.
We should probably use more junk turrets too. Especially for blood moons, there's no reason not to use one. The ammo is just plain iron. They're helpful when scavenging but you end up needing to lure zombies to it (that said, they have also saved my bacon before when I got an unexpected flood and was able to fall back and get some help from the turret I left in the front entrance). The turrets are a lot nicer with points in it but I find them useful even with no points. It's basically free damage and the zombies never attack it. Turrets can be modded with the ammo barrel mod so you don't have to pick them up so much.