I tested all the weapons for their efficiency in killing Special Infected to see the difference between them. Note 1: Tests were performed at max level with max upgrades, your damage will be lower if you do not have MAX precise aim upgrade. Note 2: Piercing Bullets was utilized in the test. Note 3: The test was performed on an Uber Charger in the Scenario server, and real encounter values will differ drastically depending on the difficulty and amount of players playing in coop. Note 4: All weapons here to my knowledge, except the Sniper Rifles have bullet drop-off at long range. All tests were performed at near point-blank range however. This means that all weapons will deal lower damage at longer range, except for sniper rifles. Note 5: Weak Point Spotter had procced a few times during this test. The tests were done multiple times to ensure a fair calculation. Final Note: Timing values here are not 100% correct, and differ with 10 to 20ms. Pistol - 3.40s Dual Pistol - 3.96s Magnum Pistol - 3.10s Rifle M16 - 3.71s Rifle AK47 - 3.30s Rifle Desert-Rifle - 3.44s Rifle M60 - 5.45s Rifle SG552 - 3.60s Auto Shotgun - 2.03s (Pellet headshot) Pump Shotgun - 3.40s Chrome Shotgun - 3.50s Spas Shotgun - 2.25s (Pellet headshot) SMG - 5.14s MP5 - 4.40s Silenced SMG - 4.60s Hunting Rifle - 3.80s AWP Sniper - 3.20s (scoped) Millitary Sniper - 4.10s SCOUT Sniper - 4.20s (scoped) Melee (dagger) - 2.7s (1.5s aiming at the head) These are all the weapons I tested and how long they took to kill the Uber Charger SI at near point-blank range. All shots were abdominal shots. Although Auto and Spas shotguns had the tendency to cause multiple headshots.