Well, I know I am opening a can of worms here, and I am sure I screwed up, but...
I just got 10 rounds sized with my brand new Lee 308WIN Collet die. Then breakage!!
I read the instructions and was using them in my RCBS JR3 press. Being careful not to apply too much force per instructions, I carefully turned the die 1/8 to 1/4 turn after trying a bullet in the case. I finally got to the point where the bullet would just barely start to seat half way then stop using hand pressure against the side of the bench. I felt it wasn't too loose, and not too tight.
After the 4 th round after setting the lock nut, the top alum cap popped! I found the soft threads had stripped and the collet has a small indent from the matching cone.
I should have known to stick with a RCBS neck sizer set.
Looks like I will send to Lee. Unless someone wants to trade. It is a brand new Lee Collet Deluxe set (collet neck sizer, FL sizer, seater, shellholder, dipper) and a used factory crimp die with it too.
I would gladly exchange a decent RCBS Neck sizer set.