Pistol (Revolver)

Weapon
Ammunition: Pistol Rounds, Armor-Piercing Pistol Rounds, Antipersonnel Pistol Rounds
Upgrades: Clip Size, Damage Increase

Your first opportunity to pick up this weapon will be from inside the baby carriage during the Welcome to Rapture chapter.

Ammunition

Pistol Rounds: These .38 caliber bullets are a reliable way to deal moderate damage to almost anything.
Carry/Load: 48/45101

Armor-Piercing Pistol Rounds: These .38 caliber bullets are particularly effective against metal or armored targets, like turrets, security bots, or all variations of the Big Daddy.
Carry/Load: 24/45101

Antipersonnel Pistol Rounds: These .38 caliber bullets are specifically designed to neutralize non-armored targets like Splicers.
Carry/Load: 24/45101

Upgrades

Clip Size: An auto-loading clip effectively quadruples the clip size of the pistol. And that it does – from 6 to 24 bullets. I have no idea how they expect you to use a clip on a revolver, though.

Damage Increase: An ammunition accelerator increases the damage done by the pistol. Don’t bother with this upgrade until there’s nothing better to take.