A bastard sword is about 4 feet in length, making it too large to use in one hand without special training.
Description: Due to its size, a bastard sword is an exotic weapon. A character can use a bastard sword two-handed as a martial weapon.
|One-Handed Melee Weapons (Exotic)|
|Weapon||Cost||Damage (S)||Damage (M)||Critical||Range Increment||Weight||Type||Special|
|35 gp||1d8||1d10||19-20/×2||–||6 lb||Slashing||–|
Source: Core Rulebook