Damage Stats

I found this on another forum and its ALL the damge stats for L4D

Infected Statistics
Normal Infecteds (25/50/75/100 Health, 50 in Versus)
Hunting Rifle: Everywhere: Instant Death
Pistols, Uzi, M16 & Shotguns:
Head: Instant Death
Other: 100% Damage
Boomers(50 Health)
Hunters(250 Health)
Smokers(250 Health)
Head:
Shotguns: 125% Damage
Others: 400% Damage
Torso: 125% Damage
Arms: 100% Damage
Legs: 75% Damage
Tanks(3000/4000/8000/8000 Health, 6000 in Versus)
Everywhere: 100% Damage
Witches(1000 Health)
Pistols, Uzi, M16:
Head: 100% Damage
Other: 50% Damage
Hunting Rifle:
Everywhere: 100% Damage
Head: Stunned for 2 or 4 seconds if shot while crying.
Shotguns:
Head: 200% Damage
Other: 100% Damage
Point Blank: x2.5 Damage
Melee Attacks
Boomer: 2 Damage (1s/hit, 2 DPS) (Area of Effect)
Hunter: 10 Damage (1s/hit, 10 DPS) (Area of Effect)
Smoker: 2 Damage (1s/hit, 2 DPS) (Area of Effect)
Tank: 24 Damage (2s/hit, 12 DPS)
Special Attacks
Leap: Up to 25 Damage (Area of Effect Stun)
Pounce: 5 Damage/Hit (0.55s/hit, 9.1 DPS)
Pounce on Fire: +10 DPS
Tongue: 5 Damage/Hit (1.1s/hit, 4.55 DPS)
Rock Throw: 24 Damage (2s/throw, 4s recharge, 4 DPS) (Area of Effect)
Delays
Vomit: 30s recharge
Leap: 1s buildup
Tongue Miss: 3s recharge
Tongue Break: 15s recharge

Weapon Statistics
Pistols
Damage:
Point Blank: 35 Damage
Smoker Range: 22 Damage (100 ft)
Long Range: 13 Damage
Friendly Fire: 0/1/6/35 Damage, 1 in Versus
Penetration:
Walls: Normal (1 feet)
Infecteds: Normal (2/bullet)
Single Pistol:
Rate of Fire: 300 rounds/min (3s per clip)
Reload: 2s
DPS: 175 damage/s, 105 sustained
Dual Pistols:
Rate of Fire: 600 rounds/min (3s per clip)
Reload: 2.8s
DPS: 350 damage/s, 181 sustained
Uzi:
Damage:
Point Blank: 19 Damage
Smoker Range: 15 Damage (100 ft)
Long Range: 11 Damage
Friendly Fire: 0/1/3/19 Damage, 1 in Versus
Penetration:
Walls: Normal (1 feet)
Infecteds: Normal (2/bullet)
Rate of Fire: 1000 rounds/min (3s per clip)
Reload: 2.4s
DPS: 317 damage/s, 176 sustained
M16:
Damage:
Point Blank: 32 Damage
Smoker Range: 31 Damage (100 ft)
Long Range: 29 Damage
Friendly Fire: 0/1/5/32 Damage, 1 in Versus
Penetration:
Walls: Extra (1.5 feet)
Infecteds: Normal (2/bullet)
Rate of fire: 700 rounds/min (4.3s per clip)
Reload: 1.8s
DPS: 373 damage/s, 262 sustained
Hunting Rifle:
Damage:
All Ranges: 90 Damage
Normal Infecteds: Everywhere: Instant Death
Friendly Fire: 0/3/15/90 Damage, 3 in Versus
Penetration:
Walls: Extra (1.5 feet)
Infecteds: Infinite
Rate of fire: 225 rounds/min (4s per clip)
Reload: 3s
DPS: 338 damage/s, 193 sustained
Pump-Shotgun:
Rate of fire: 69 shots/min (7s per clip)
Reload: 0.5s/shell & +1s when empty
Pump-Shotgun (10 pellets per shot)
DPS: 274 damage/s, 175 sustained
Damage: (per pellet)
Point Blank: 24 Damage
Smoker Range: 14 Damage (100 ft)
Long Range: 7 Damage
Headshots: No extra damage (except for Witches)
Friendly Fire: (per pellet) 0/1/4/24 Damage, 1 in Versus
Penetration:
Walls: Normal (1 feet)
Infecteds: Infinite
Auto-Shotgun:
Rate of fire: 200 shots/min (3s per clip)
Reload: 0.4s/shell & +1s when empty
Auto-Shotgun (12 pellets per shot)
DPS: 960 damage/s, 411 sustained
Damage: (per pellet)
Point Blank: 24 Damage
Smoker Range: 14 Damage (100 ft)
Long Range: 7 Damage
Headshots: No extra damage (except for Witches)
Friendly Fire: (per pellet) 0/1/4/24 Damage, 1 in Versus
Penetration:
Walls: Normal (1 feet)
Infecteds: Infinite

I found a guide like this somewhere as well, only it had specific damager from each on on specific infected... and it turns out that double pistols did more damage/sec to tanks and witches than the uzi.

Score another one for the double pistol!