Quote Originally Posted by ireload2 View Post
>>>1. The more tapered .303 case presumably puts more pressure on the bolt and receiver than the more parallel-sided 7.62mm case?<<<

Why do you presume that?
I should rephrase that to say "given an equal case contact area and charge".

I understood it was generally recognized that the more steeply a case tapered, the less adhesion to the chamber walls. Is that not correct?