Originally Posted by foreign
great hread and great diagrams woods. so just to clarify for myself a crush fit is when you feel slight resistance on the bolt handle as its closed. would it be good to feel for this withouut the extractor and so on on the bolt face so there was no spring and feel from that
I don't go that far but it is hard to feel a slight crush fit on some bolts. Some bolts have a lot of lug contact and are hard to close, even empty. However, you can definitely tell when your cases have grown enough to really bind and with the headspace gauge you can measure it and set your die to move the shoulder back .001" to .0015".
Many reloaders do not like to have their shoulders that close because in the field and piece of trash can cause a problem and you do not want the distraction of having to grind your case into the chamber when you have game in sight and it matters. Always, give extra room for easy chambering if there is dangerous game or bears in the picture.
One thing that is obvious is that until you reach the point where you can set the shoulder in the exact same place everytime along with sizing the case body the same everytime, you have a case that is changing. Consistancy is one of the most important elements of accuracy.