Whenever I try to track pi+/- mesons as PRIMARY particles through a magnetic field, the pi's get immediately "boosted" out of the "experimental hall" (=mother volume). The tracking works fine for leptons, but is useless for charged pions.
The user used the physics list of ExampleN02 which deals with leptons only. Thus hadrons did not have any physics processes and thus they behaved like geantino without interacting with any material.
