Thread: Case head separation

Greetings @Micky Duck,
The .270 has a more tapered case and a shallow shoulder angle and, as you found, works well with partial sizing as long as the load is not too hot. In my .308 I had mixed results so went to neck sizing and more recently the competition shell holders for the hotter loads. I still neck size for the light short range (100 metres) target loads in the .308.
Greetings also @6x47,
Partial sizing and appropriate head spacing are actually different. Partial sizing is where the die is backed out sufficiently that the shoulder is not set back at all. The body of the case is reduced but only most of the neck is sized. It only works where the shoulder is at a shallow angle. I suspect that the shoulder is set back a little on chambering, not for 30 degree shoulders.
Regards Grandpamac.