Prodd stats are off
 

Prodd could kill by hitting the skull but could also bounce off human skin.

However it does impart slightly more energy than a slingshot.

Hence:

Prodd Damage 1d-1 ST 8 Cost $40 Wt 5.0 lbs Fires every other turn or once per turn if adjDX 14+

To kill a human roll a 6 for damage and score a triple damage result.

Re: Prodd stats are off
 

Are the original stats for a stone or bullet? Prods were used to kill small game, but if you actually used the limbs from a light crossbow it would probably inflict more damage.