Thread: Advice please

In regards to case sizing, was I right to size brass to bump shoulder back .002” allowing for a bolt fall with no resistance or should I have left longer so bolt closes with minimum pressure while not pushing shoulder back?

Originally Posted by Hunterdave

In regards to case sizing, was I right to size brass to bump shoulder back .002” allowing for a bolt fall with no resistance or should I have left longer so bolt closes with minimum pressure while not pushing shoulder back?

This is what I have gone to recently after neck sizing for years. 0.002 inches allows for free chamberingand removes the possibility of any tight ones. This assumes you are using a competition shell holder kit which I have found gives the most repeatable clearance.
GPM

Originally Posted by Hunterdave

In regards to case sizing, was I right to size brass to bump shoulder back .002” allowing for a bolt fall with no resistance or should I have left longer so bolt closes with minimum pressure while not pushing shoulder back?

Two schools of thought on that, when neck sizing was all the rage I used to leave it at just a bit of tension on closing the bolt.
Accepted theory then being the case neck and hence bullet had to be perfectly centered in the bore.
Now the pro shooters are full lenght sizing everytime as it is more consistent, so might as well save the wear and possibility of galling up your bolt lugs and give it 1 or 2 thou of headspace.
Its good enough for the professional shooters so thats what I do now.