PAWildMan,

I understand the process that you are describing. Can you elaborate on what doing this will do for the case? Accuracy? etc...

Thanks

Tom

Your not shoving back your shoulder so it fits your chamber tight and doesn't move when fired and consistent each time fired.

What bigcountry said is correct. In a nutshell, you're not overworking your brass with the sizing die. But that option is up to you.
As far as accuracy is concerned, this may or may not be a large contributing factor. Such things as proper bedding, a good trigger and good optics along with quality ammunition are essential. There are many other protocols inthe quest for accuracy and/or precision such as weighing and matching cases,weighing bullets, weighing individual powder charges, cleaning primer pockets, case trimming, bullet seating depth, etc., etc., that help contribute to accuracy/precision. It just depends on the degree YOU require.
Hope this has helped...............

Thread the sizer die into the press until the die touches the shell holder when the ram is at the top of the press stroke. Raise the press handle and turn the die down another one-eigth to one-quarter of a turn and set the large lock ring. If you're using a carbide sizer die, make slight contact with the bottom of the die and the shell holder.