dellet
Gold $$ Contributor
What you might want to try, is with new or full length sized cases, including setting the shoulder, is to index the rounds before firing.
If it is a chamber problem, the the “bent” part of the case will be in the same place every time.
If the bolt face or breech block is not square with the chamber, case head to base of shoulder length will not be square making it near impossible to have a neck perpendicular and centered over the base.
You mentioned, twice fired and the bolt is not sticky. A low pressure load that has not expanded to fill the chamber, can not be expected to be true to form.
One thing I have learned from sub sonic shooting is that low pressure loads cause more problems on the target and loading bench than you would think possible. It is impossible to set a die up to reform varying sizes of brass to the same size and shape, unless you set the die up to size/correct the smallest piece.
Your problem may just go away once the brass has been fully formed, because only then can it be consistently re-formed.
If it is a chamber problem, the the “bent” part of the case will be in the same place every time.
If the bolt face or breech block is not square with the chamber, case head to base of shoulder length will not be square making it near impossible to have a neck perpendicular and centered over the base.
You mentioned, twice fired and the bolt is not sticky. A low pressure load that has not expanded to fill the chamber, can not be expected to be true to form.
One thing I have learned from sub sonic shooting is that low pressure loads cause more problems on the target and loading bench than you would think possible. It is impossible to set a die up to reform varying sizes of brass to the same size and shape, unless you set the die up to size/correct the smallest piece.
Your problem may just go away once the brass has been fully formed, because only then can it be consistently re-formed.