One rifle I've been shooting lately is my Cabela's Hawken, made in Italy by Investarms. At some point I'd like to take it hunting, which IMNSHO requires a sling. Being a more modern design than, say, my long rifle, I didn't mind mounting modern quick detach swivels.
I found this set by GroveTec at MidwayUSA which fit. I paired it with this Hunter carry strap. Installing the rear swivel required drilling a hole in the stock. The front swivel clamps around the lower ramrod pipe. Before installing it, I Loc-Tited the screw securing the pipe since I noticed it was loose already. I also Loc-Tited the Chicago screw holding the strap to the rear swivel. In my experience, thread locker prevents a lot of problems. I even put some on the inside of the part of the front swivel where it clamps over the ramrod pipe.
The other addition I made was to replace the Williams fiber optic front sight with a Lyman 37ML white bead from October Country. The dovetail for the front sight is .360" instead of 3/8" (.375"), which is more common in the US. The Williams sight never fit the dovetail that well and wasn't as secure as I'd like.
The Lyman front sight wasn't as good a fit as I wanted, either. I wound up dimpling the bottom of the dovetail recess to raise some metal and shimming it with a small piece of 600 grit wet/dry sandpaper. After the sight was in I staked the dovetail as well.
The new sight is a little shorter than the Williams it replaced, so I'll have to rezero the rifle. No biggie.