Gamma round (Fallout 4)

 is an ammunition type in Fallout 4.

Weapons using this ammunition

 * Gamma gun
 * Zeta gun
 * Lorenzo's Artifact gun

Locations
This particular ammo type can be found in the Glowing Sea, in the Crater of Atom. NPCs belonging to the Church of the Children of Atom carry this ammo type and drop it when killed. They reside in the Crater of Atom, and are non-hostile. Killing the followers is your option.