What happens if you leave the Church?

If a Catholic leaves the Roman Church for the Eastern Orthodox Church what is the effect on his or her soul? Is it a matter of automatic schism? What happens to their soul presuming they die in this state?

The following link should help answer your question. If you have any further questions or concerns that are not answered by this link, please contact Catholic Answers directly.
Recommended Reading:

*]Is a fallen away Catholic culpable?

DISCLAIMER: The views and opinions expressed in these forums do not necessarily reflect those of Catholic Answers. For official apologetics resources please visit www.catholic.com.