Hello zonians I've got an updated list of gun damages after all of the changes. Special thanks to Triton for the help on testing them. I don't have the flamethrower as it's a waste of money but feel free to leave the damage. Also if I have anything wrong correct me.
Red Rifle: 4 (Fast Bullets)
Green Rifle: 5 (Slow Bullets)
Lightning Pistol: 5
Poison Rifle: 5
Apple Launcher: 6
Christmas Rifle: 6
Egg Launcher: 5
Enranged rifle: 5
ER Beamer: 5
Flower Gun: 6
Grass Gun: 5
Grenade Launcher: 15
Heavy Laser: 5 (8 frenzy)
Lava Gun: 5 on impact 2 burns
Love Rifle: 5
LR Pulsar: 4
Metallic Rifle: 4
Pez Rifle: 5
Photon Cannon: 6
Chaingun: 4
Plasma Shotgun: 3 (all 3 or 1 damage doesn't stack)
Pumpkin Rifle: 5
Streamer: 5 (7 Frenzy)
Watermelon: 8
Ghost Rifle: 3.5 (any shot damage doesn't stack)
Goonadier: 3 (on impact) & (poison slows down opponents)