If you feel the crimp is excessive, back out the die partially. Go shoot some groups with full crimp, partial crimp and no crimp...let your results dictate what your barrel/load likes. Personally, running some sort of crimp with a self loader is a good choice. If your neck tension is not enough, the bullet slamming into the feed ramp could give you bullet setback. With some loads, bullet setback could result in excessive pressure.
My 20" AR rifle seems to like the aggresive crimp. I shot multiple 10 rd groups and all of the best ones came from the rounds that I cripmed in the Lee FCD. I don't really like the looks of the necks on the brass though, the crimp marks are still very evident.