yeah where did the missiles hit in the over world? Like I said
When I played with it, missiles could hit in a 30 block radius while using a T3 launcher and control panel.
It looks like an ICBM issue. They get lost when you send them through a mystcraft portal too.
I created a thread about it awhile also on the ICBM forums:
http://forum.calclavia.com/index.php?threads/icbm-in-space.2769/
Actually, no. ICBM actually do/can go into space. Most early space travel was done while riding on modified ICBMs.