[Bliu]

yes it is true. due to the fact that the bst usually charms something that is out of the lvl range in the party. the monster acts as another party member so the lvl of it contributes to the exp gain.

[tacitus]

As far as I know the party as a whole only takes an experience penalty when the Beastmaster's pet is a level above the highest level in the party.

[ntb]

BST takes an exp loss with a charmed mob, the party does not. I'm not sure about the exact numbers but I think it's a 25% exp loss..

As far as finding a party as a BST, good luck. BST is pretty much a soloing class, and for the most part it's because there is the general misconception that the party DOES take an exp loss. Kinda sucks if you're a BST, but then again it's the perfect job if you like soloing.

[Bliu]

I forgot to add that the bst familiar doesnt cause a exp penalty

[Lily]

Actually using a summon from a broth does still cause the -30% reduction.

[herk]

tacitus :
As far as I know the party as a whole only takes an experience penalty when the Beastmaster's pet is a level above the highest level in the party.

You wouldn't have to worry about this at all. As far as I know, the only time an xp penalty is given is if the charmed pet is still charmed and alive at the end of the battle. So after 35 when the bst's get "leave" I think they make a hell of a party member.