Dude, watch in what Unit you do your "rotations" . Cannot easily calculate the value ... however when in radians you set your angle value from 0 ... 2Pi ... hmm ...
Did you mean Ogre::Degrees ?
Yep, Radian(30.0f) is 1718 degrees.
Although that shouldn't stop it from at least rotating to some random looking orientation.
(Unless a yaw, pitch and roll each of 1718 degrees ends up looking just like the original orientation, which is unlikely but possible)