robert6715
Well-Known Member
Keep in mind that all bottleneck cases loacate/headspace on the shoulder datum, even your round shouldered Weatherby caliber.
I am pretty sure that belted magnums headspace off the belt.
I understand the idea of just barely bumping the shoulder to keep the case from growing. I do this with my 338-378. In essence you are getting the round to headspace off the shoulder like a non-belted round.
If he has a FL die set to "cam over" and the die is made to spec, then he is surely headspacing off the belt.
Thoughts?
Rob