Sounds like there is still downward movement of the bullet while the crimp is being applied. Separate the two steps - seat then crimp.
I primarily use plated and lead bullets and don't have an issue with bullet tip deformation with the two step process.
In the worse case; ie, the problem continues, some die makers will make you a custom seating die to match your bullet.
A lack of planning on your part does not necessarily constitute an emergency on my part.
Last edited by serf 'rett; February 12, 2013 at 11:42 PM.