9mm Inconsistant Seating Depth

Maybe the folks at Lee can offer me some insight as to why my die won't give me the COL I set it for.

The bullets I'm using are RN plated 115 grain bullets, I don't know why the plug would not be right for a very run of the mill bullet. :confused:
 
lee eating dies have a crimp built into the die. I think you may be going to far into the body of the die and and slightly crimping before the seater pushes your bullet in. try backing out the body of the die and screwing the seater plug in farther to get to your wanted oal. i'll post a pic of some hornadays that I did the same thing in, the noses are all different and the lengths are all over the place. I was getting the bullet crimped in, then trying to push the soft bullet into a crimp case and deforming it.
 
Unscrew the seating stem until it is almost out of the die. Place a flared die in the shell holder/plate and raise the ram.
Screw in the die body until you feel resistance where the crimp section contacts the case. Lower the ram and unscrew the die body 1-2 full turns.
Place a bullet on the case and raise the ram. Screw the seating stem down until it contacts the bullet (without letting the die body turn). Lower the ram and turn the seating stem an additional 2 turns (without letting the die body at all). Raise the ram and you'll feel the bullet seat. With the ram still up, turn the lock ring on the die body down to lock the die body in place. Now, you can adjust the seating stem to get the COL you want.
As long as you aren't seating and crimping in one step, the die body is permanently set.
 
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