Crossbow, Repeating

The repeating crossbow (whether heavy or light) holds 5 crossbow bolts. As long as it holds bolts, you can reload it by pulling the reloading lever (a free action). Loading a new case of 5 bolts is a full-round action that provokes attacks of opportunity.
You can fire a repeating crossbow with one hand or fire a repeating crossbow in each hand in the same manner as you would a normal crossbow of the same size. However, you must fire the weapon with two hands in order to use the reloading lever, and you must use two hands to load a new case of bolts.

Crossbow, Heavy
Cost Damage (S)   (M)     Critical    Range Increment  Weight  Type
400gp           1d8  1d10  19-20x2 120ft.                  12lb.     Piercing
Crossbow, Light
Cost Damage (S)   (M)   Critical    Range Increment  Weight  Type
250gp           1d6  1d8  19-20x2 80ft.                    6lb.       Piercing

Courtesy of 3.5 Player's Handbook