Inception Particle Explode

Until 46:00 it goes well for me but after that it does something very weird.

You can help me?before bullet constraints is going well,but after apply the result is different.before bullet constraints…http://i.imgur.com/54SWerq.jpgAfter bullet constraints…http://i.imgur.com/azm1lBo.jpghttp://i.imgur.com/9QUU96S.jpghttp://i.imgur.com/Knbkpup.jpg