Triming Cases

[Kurt]

Over the years I have collected 1 RCBS one Forrester, and two Wilsons.
They are all set for a particular shell. The Wilson is the only one I use. The problem I find with the Forrester is the collet that holds the case. It is very hard to keep it cutting the same length. The length changes by how hard you draw the collet in to hold it and if the rim diameters vary the collet gets drawn in deeper and the trimmer makes a longer cut of it might go the other way and cut the case shorter.
I only use the Forrester when I'm cutting down long brass and I attach the drill motor to the trimmer but I leave the case long and finish using the Wilson.