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Die Depth

I use Lee dies with my RL450B.  The instructions state to adjust some of the dies to the point where they just touch the shell plate and then to back off slightly.  To adjust the dies that far down in my Dillon press, there is only a couple of die threads sticking out of the die for the lock nut to screw into.  Thus just doesn't seem right.  Is the head of the Dillon press just so much thicker than some of the other presses out there or am I doing something wrong?

nope thats right. I thought the samething when I set my 550b up and I am new to reloading. I made 250 rounds in about 1.5 hours but that's the right it does look weird 

Lee dies, especially older ones, are skimpy on the threads. Turn the lee die lock ring upside down on the die, so that the o-ring is at the top. This way, as long as there is one full thread above the toolhead, the lock ring will secure the die in place. Seeing threads above the top of the lock ring is irrelevant.

I use a mixture of die brands on a 550 and that's exactly what I've found. The Lee dies will be on their last thread before coming into proper "adjustment". You might try some of the 1" Dillon lock rings. They are much thinner than the Lee lock rings and will give more adjustment space, as well as being easier to adjust.

Someone mentioned on another forum that Dillon had provided some sort of shim to install underneath the shellplate that moved it up a bit further to give you more adjustment room on your dies.  Is that true?  If so, how would one go about getting this item?

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