Originally Posted by Kevin Thomas
I am still at a complete and total loss as to the fascination with Neck Dies. Problems, plain and simple, just looking for a place to happen. They don't increase accuracy over F/L sizing, and assuming the F/L dies are set up properly, they don't add a bit of case life.
Me too, but I'm convinced the reasons they do neck size is they don't understand how bottleneck cases headspacing on their shoulders fit the chamber aligning the bullet with the bore when fired as well as how firing and sizing changes the case shape and dimensions.
One common thinking is neck sized cases fit the chamber better than full length sized ones as they rest on the chamber bottom when fired. Sierra Bullets put this reason in one of their loading manuals years ago. I mentioned this to Martin Hull and he laughed.