Lube sizer dies questions

[larrymac1]

This is sort of a curiousity question mostly. On most lube sizer dies their is an "O" ring at the top of the die. What is the other groove just below that for? I had a Lyman .355 sizer I was using and it suddenly started leaking lube out of the top of the die. Can another "O" ring be put in that groove?
I did have a heck of a time getting that die out of the 4500 it was really stuck and the center pin kept pushing completely out of the die. Is that normal?

[largom]

Can't answer about the second groove but if your die is leaking then you are applying too much pressure on the lube screw or you need to replace the O-ring.
If dies are hard to remove just heat it up with a hair dryer.

Larry

[JonB_in_Glencoe]

The older sizers made by Ideal and Lyman, the #1 and the #45, fasten the die in place with a set screw, so that wide shallow groove on the die is for the setscrew to seat into.

Photo of a Lyman 45 with the setscrew removed
http://castboolits.gunloads.com/showthread.php?166565-Lyman-45-buying-guide-and-cleanup-instructions&p=1862779&viewfull=1#post1862779

[Lead]

I've noticed if I leave the dies in for a long length of time they stick, but mine has seeped from day one from the bottom. Probably cause I keep the pressure on pretty good.