.308 Caliber Round (Fallout 3)

The .308 Caliber Round is a Small Guns ammunition found in the game. It is only used with the Sniper Rifle and its unique variants.

Weapons using this ammunition

 * Sniper Rifle
 * Reservist's Rifle
 * Victory Rifle

Locations
The .308 Caliber Round, essentially the civilian version of the well-known 7.62x51mm NATO round, is the third rarest small guns ammunition found in the game, next to .44 Round, Magnum, and the BBs; very few enemies carry Sniper Rifles, and many are located in hard to reach places or have only a small number of rounds to be looted. The Hunting Rifle largely provides the same effect while using the much more common .32 Caliber Round, making the Sniper Rifle and variants limited in effectiveness until the player gathers a stockpile of ammunition.

A large stockpile of .308 rounds can be found in the Bethesda Ruins. There is a sniper perched in a window of a dilapidated office building. While the Sniper Rifle itself is in poor condition, there are at least 50 .308 caliber rounds (with the Scrounger perk) to be looted from ammunition boxes by the window and from the dead Raider's corpse. Another set of .308 boxes can be found in Minefield near Arkansas. There is also a Sniper Rifle in a Hollowed-Out Rock south-east behind Megaton with 10 .308 Caliber Rounds, some stimpaks, and a note.

Operation Anchorage offers unlimited ammo. When you restock your ammo drop it and restock again, then drop your ammo again and so on. If you do it for about 15 min. you will have 5000-7000. Then use the Operation Anchorage glitch to get it out of the simulator.

10 308. are in an Ammunition Box at the sniper perch near a Wasteland Tent.

Vendors
Chief Gustavo at Tenpenny Tower will often have a dozen or more rounds for sale, and restocks frequently. Flak and Shrapnel often have 8-10 rounds for sale, but not always. Knight Captain Durga in the Citadel will have 20 or more rounds frequently, but is not available until halfway through the main quest line. Karl may also have a few for sale. Occasionally Moira Brown at Craterside Supply in Megaton will sell this ammo.

Note that, with the new DLC The Pitt, an ammo press eventually becomes available. This press allows for easy and rapid conversion of one caliber of ammunition to another. Take full advantage of this; convert more common ammo types like .32 or 5.56mm to .308.

It is possible to receive inordinate amounts of this ammo through a glitch present in Operation: Anchorage. Simulation ammo dispensers will always give you a fixed amount of ammunition, but if you receive the ammo and then drop it from your inventory as a box on the ground, you can use the dispenser again and receive the same amount again. Repeating this process allows you to stock up on literally hundreds of thousands of rounds if you have the patience, and then you can use a glitch at the end of the session to plant all the ammunition and guns onto a body dragged into the simulator, allowing you to take all the ammo into the real world with you. This also works for any other ammo types available through the dispenser.