Personally, I don't like buckles on straps & etc. on slings & bags & etc., some do.... If I do use a ring, it is a round smooth or oval ring with no sharp edges. They have a tendency to rust or corrode & like a said, they have a uncanny way of making dings & scratches in a stock. I have a nice Browning 1885 Highwall & I kept getting lil tiny dings on the buttstock... Found out it was from me putting the gun in a case & the adjustment on the sling would hit the stock when I put it in there, thus putting it in the case & hauling it around & etc. eventually would ding it.
On the ML'ers I try to keep things clear of anyplace I will rest or carry the gun against clear of all metal & bone objects. I have a horn handled patch knife high on the strap of my possibles, as is the horn powder measure & pan brush, etc. I guess you would say all around my middle of my waist I want clear so I can move the rifle easily, quietly & without maring it in the waist area. I carry my skinning knife on a belt in the rear over my right rear pocket out of the way also.
The correct sling for a Jaeger would be a cloth sling or a cloth/leather sling. I saw one some one made recently with jute in the middle & leather on each end that looked nice. I think it was ? don't know what ya call it, binding for a chair or something from a upolstry shop ? About 1.5" wide brown ... looks like burlap.... sewn to leather on each end. Looked real nice. maybe they call it binding, I don't know. An upolstry shop would know what you are talking about. And some just use old looking patterns of upolstry matterials..