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What you did is what I was asking about. Does it affect neck sizing in any negative way like neck runout?

There maybe some confusion with my original question? I wasn't referring to operating a collet die without the mandrel but cutting the decapping pin off the mandrel and operating the die with a...

While we're on the subject of collet dies. What's the best lube for the collet?

My worry is that the decapping pin might keep the mandrel aligned in the case to reduce neck runout.

Hi all. Will removing the decapping pin from a Lee collet die mandrel have a negative affect with the neck sizing operation in any way? Thanks