Going to a gunsmith is a good idea. Many of us are not handy with tools. As for me, breaking stuff with hand tools is my super power lol). Just drilling a hole isn't all of it. Your sling studs have a captive fastener on the inside of the barrel channel...possibly (probably) covered by material. A new hole should also have a captive fastener inside and epoxied in place. Simple job for a gunsmith.
if going to a gunsmith, look at something like this from Seekins who make high qual stuff:
1. This is their Universal mount. Use the front sling stud location for the hole and have another drilled and fastener installed for the slot.
View attachment 8347727
https://seekinsprecision.com/ubm.html
2. Their SRS rail
View attachment 8347728
<p><strong>SRS Rail</strong></p> <p>The Seekins Precision SRS was designed with a Picatinny rail mounting point and a reinforced, non-rotating sling attachment. The SRS provides the shooter with multiple solutions for carryi
seekinsprecision.com
I put the SRS rail on a Rem 700 in an HS Precision stock. They make these to fit HS, Bell and Carlson, and McMillian fiberglass stocks. It will be too short to match up with your sling studs, but again...if going to a gunsmith then a new fastener/screw position is easily done. For me, this got rid of the rear sling stud but provides a sling mounting hole in the back. Worked wonderfully (and yes, I installed it myself and managed to not break anything! haha). If you went with this, you wouldn't need the rear sling stud and you can have it removed and plugged up by the smith.
Note, I'm not one of the gunsmithing experts here and others may correct any inaccuracy or bad advice I've provided.
Best of luck and welcome to the Hide...the rudest rifle forum on the net! hahaha
P.S. these Seekins items can be found from other retail sources other than Seekins if out of stock. Amazon, Midway, etc. Just make Google your friend....or, your gunsmith may have other brands/sources that they prefer.
Cheers