RE: Lee Collet Die
bigcountry,
Just got thru reading your question and all the replys on the collet dies. I've been using the Lee collet dies, several sets, for a long time now and love them. As others have stated, its not for crimping, it resizes the neck. The farther you screw it in the tighter the neck fits the bullet. I have found that after setting it I use my on South Georgia testing procedure. I take my thumb and push on the bullet, if it doesn't move, its' right. Have never had a bullet pushed down while in the clips from firing, etc. Crude, but works for me. Someone on the forum recommended rotating the case, this also works to make it more uniform.
As for as the Lee die, there may be better ones on the market, but I'm well satisfied with mine.
My two cents worth.
dog1