With each level of this perk, the player character will gain +2 Strength (up to 10) for purposes of determining range with Throwing weapons only, yet it will not exceed a weapon's maximum range.
Range is calculated as (3x Strength). Since grenades have a maximum range of 15, this perk is pretty useless with a Strength above 3.
Fallout: New Vegas
With this perk, the player character's throwing velocity and range increase by 50% with all thrown weapons (melee or explosive) and Explosives weapons that fire in an arc, such as the grenade launcher or Fat Man, as well as incinerators.
Despite having Explosives as a requisite skill, this perk also benefits certain non-explosive weapons as well, such as throwing spears.
This perk does not improve V.A.T.S. accuracy against targets.
The image for this perk is reused content from the cut Throwing skill from Fallout 3.
Fallout: The Roleplaying Game
When making a thrown weapon attack, the user may spend 1 AP to increase the Range of the weapon by one step—from Close to Medium, or from Medium to Long.