|For an overview of 7.62mm ammunition types, see 7.62mm.|
The ammunition is used in the most common and most powerful small and big guns, and can be found almost anywhere in the game.
Weapons using this ammunition
- 470 rounds on the raiders in Brahmin Wood.
- 500 rounds available from Quartermaster Octavius after completion of the Brahmin Wood (mission);
- 643 rounds available in the Freeport raiders camp;
- 1400 rounds available in the Rock Falls raiders camp;
- 1770 rounds on raiders in Macomb;
- 100 rounds in Peoria during a search of a dead raider's corpse + 80 more in the dungeon;
- In Quincy, 860 cartridges on Beastlords; another 100 on a friendly ghoul and 50 more can be found in the city;
- In Mardin, 212 rounds on a Beastlord
- A Springfield a significant number on raiders;
- In St. Louis, 4570 rounds available from super mutants; 36 more can be found inside the destroyed bunker - in the trunk with the sniper rifle;
- In Jefferson, 3250 rounds on super mutants, another 100 on turrets and 650 more can be found in drawers, cabinets and chests in the survey maps;
- In Kansas City, a significant amount (about 5500) on super mutants, and another 450 in drawers, cabinets and chests in the survey maps;
- A Osceolla, 6980 rounds on super mutants; 540 more can be found in the drawers and cupboards;
- In Junction City 550 rounds on Reavers, another 50 pieces can be bought from merchant Juan and 50 more from Chuck;
- In Coldwater 1160 rounds on deserters.
- In Newton 2525 rounds on robots, another 300 rounds can be found on the workbench.
- Canyon City - 17,150 on robots; 350 more can be found in the chest and on the bench.
- In Buena Vista 4360 rounds on robots, another 150 can be found in the chest and another 100 pieces from a dying Percy.
- In Scott City 700 pieces on robots.
- Cheyenne Mountain - 300 rounds on three machine gun turrets, a few hundred rounds on the robots gunners.
- Vault 0 - 200 rounds on the Dagger Squad; 160 more on two inactive turrets in the armory, and another 18,000 rounds on robot gunners.
- Calculator's Lair - on multiple robots gunners
- 20 cartridges can be purchased from Hermit in the Hermit (special encounter).