Good advice thus far.

The bobcat being such a light rifle, you may find that the heavier the bullet the more violent the recoil. Just FYI.

I'll add:

Hornady Great Plains 385 or 410grain conical (www.hornady.com)
No Excuse 460 or 495grain conical (http://members.aol.com/noexcusesb/).

With or without an Oxyoke wonderwad. I find better oin average accuracy and velocity with a wad.