Hello gents.
I was a regular contributor of the old boards, but stopped visiting about a year ago. Went looking for it a couple of months ago and luckily found my way here.
I have been lurking for quite a while, but thought I would go ahead and throw my 2 cents in here:
I think carzngunz is on to something, mostly because I've always thought the same thing. Any other military mauser that I have seen (I've seen not nearly as many as most of you guys!) always had that screw embedded into the stock quite a bit. I always assumed that it was supposed function as a pivot point for the bolt stop assy as well.