I use the K&M and I have never had a problem with it screwing up any cases. I will say that the Power grip collar is worth it's weight in gold. The 21Century works great also but. ("Between my FIL/Mentor and me, we have all three. "K&M/21Century/PMA") They don't make a collar for it, and no the K&M collar want fit on my 21Century case holder. I thought about taking some left over pieces of Talon Grip tape and put it on the 21Century case holder, but that will tear the skin off you hands over a short period of time. I liked the idea of using a piece of rubber hose on the 21Century case holder. I will have to let my son know about that trick. I gave the 21Century case holder to him to use. As far as the K&M screwing up cases,, I would lean a lot to wards user error. I mean, that thing is fool proof. Must of been a worn out Lee case holder or over torqueing and case alinement. Who knows, But for me, The K&M works great.,, These tools cost way too much money for the owner not tobe happy with them. JM2CW
***Edited shortly after post# 42 and #43.*** BoydAllen has brought something to my attention, and I believe he is correct in his findings, about the K&M/21Century/PMA case neck holders for the drill. I advise all to read what he is talking about with the case neck holders. I'm ordering one today just to test and try it out. IT
Looks like it will solve a problem, that I wasn't aware of, that I was having with the K&M. Thank You BoydAiien.
***Edited shortly after post# 42 and #43.*** BoydAllen has brought something to my attention, and I believe he is correct in his findings, about the K&M/21Century/PMA case neck holders for the drill. I advise all to read what he is talking about with the case neck holders. I'm ordering one today just to test and try it out. IT
Looks like it will solve a problem, that I wasn't aware of, that I was having with the K&M. Thank You BoydAiien.

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