I am new, just purchased a Sauer 100 Pantera in 6.5 CM. It has two studs in the fore end and one in the rear. All studs are on the bottom of the stock. My sling, which I think is a common one, the V-TAC from Viking, recommends a stud on the side on the fore end and on top of the butt. I understand why, as the rifle hangs in an ungainly position with the sling attached where the studs are. What are the manufacturers envisioning as the use for the stud mounts on the bottom (besides a bipod for the front)? They could place them anywhere, so there must be a reason for placing them on the bottom.