I think someone on the dev team said the new recovery rates are 5/10/15%, but there is a rumor it only works on your killing bolts(and from what I've seen, it looks like that is the truth)
On the note of crossbow/throwing builds, I fully recommend any such build take Viking Magic and Blood Magic, regardless of other skills. Why? Well Viking magic offers a very nice damage add at zero skill points, and has another (my guess) damage add in the fourth slot. Unfortunately buffs require one mana every eight turns, which is enough to cancel out your normal mana regen. Which is why you get blood magic. You do not lose charges of the base Viking Magic buff unless you attack a target in melee. So pop that buff on and throw to your hearts content with a permanent +2 electricity damage! You'll regen a full mana pool after a few kills with a thrown weapon.
And if you do what my first character did and get Viking Magic/Blood Magic/Crossbow then by level 3 (when you have 'Prince of Crossbows' and have the huge ranged damage adds from that line) you will easily be one-shotting most monsters on the first level... This is without a good crossbow and any damage add equipment too (crossbow was a crude steel)
Also... Does anyone know if the crossbow line adds damage to thrown weapons? I know the damage type stacks with the piercing damage of a crossbow, but I never get any damage reports for throwing unlike with melee attacks, so I can't test and find out easily.
Edit: Mana pool, not pull. Boy I'm too tired for talking