After seeing so many people having success with these and after having problems with neck sizing in previous experiments I decided to give the Lee collet die a try. So, today I took out some old once fired cases to experiment with, I'm not going to do testing on my nice Lapua cases!
I followed the instructions for non Lee presses to screw the die down until it touches the shell holder and then two full turns. My press, a Hornady LnL, certainly doesn't cam over at that setting. I put a case into the shell holder and the primer pops out just fine but I can't feel anything happening. Basically the press just stops and I am pretty sure it is going no further without applying the most extreme pressure to the arm.
I have tried to fit a bullet into the test case and it will not push in by hand but looking at the neck of the case it looks possible that the die has resized just the last 1mm or so.
Can anyone using one of these dies advise on what it feels like when resizing the neck? Maybe the mechanical advantage in my press is such that I'm just not feeling it doing the work but I suspect it is only sizing the very end of the neck.