Size Matters

Size Matters is a perk in Fallout 3.

Effects
Each rank of this perk adds +15 points to the Big Guns skill.

Bugs
Sometimes, if you add points to your Big Guns skill AND select this perk on the same level-up, your Big Guns skill will only reflect the 15 point increase of the perk. Loading the most recent save and leveling up again should fix the problem even if you assign your points and perk exactly like you did the first time.