Looking for advice on using Lee Collet die with Forster CoAx

[gotcha]

Anybody ever read the set-up instructions that come with a collet die? Anybody? And where does it say to cam the lever over? In fact it says specifically not to cam the die over or you will ruin it!

Just a conversation here NOT an argument. no matter which method used (cam over or two full turns) if you are getting striations on the outer neck you're using to much pressure and could prematurely wear the collet fingers and seat shown in the above pic by Jepp2. Extra tight neck sizing also creates more drag on the mandrel caused by brass building up on it through too much friction. ............... A LIGHT cam-over that doesn't produce neck striations works extremely well keeping in mind that new brass may be slightly thicker of neck near the shoulder a little thinner near the mouth..... Turned necks are a dream to size. If you elect to cam-over you can permanently "lock in" collet neck pressure by tossing the LEE O-ring lock nut and substitute a split ring lock nut. Just my .02

 

[savagedasher]

Cam over is a discription where the press has maximum pressure and the press has maximum extension . It also is where the press has maximum pressure .
It works like a torque wrench with a clicker .
As far as wearing out a die I don't think it would ever happen in my life time .
Theirs nothin wrong with polishing the surfaces and useing lube . 30 years I have cam over the dies out any issues As long it is done with a case in it . Larry

 

[pete1955]

My RCBS Rockchucker press cams over even if the die never touches the shell holder.

You set your dies up with the press ram at full extension when the linkage has gone past top dead center.

And adjusting the Lee collet die with the ram at full extension simply means the press has reached its mechanical stop.

The reason this is done is the person pulling the press handle doesn't have a torque wrench built into their arm.
(no clicker adjustment at the elbow) and guessing at the force applied.