R5M long:Show me your slings!

I have a .25 R5M long with a picatinny rail on the forestock. I also have a Harris bipod from another powder burner rifle. I have an adapter coming in the mail. The Harris has a spot for a sling and was wondering how anyone may have drilled the rear stock for a slingstud. Experiences, mistakes, general advice? Plus if you have pics of your sling setup please post those as well.
 
I don’t think I skimped, it’s a three screw adapter plate that got rock solid reviews. And it’s a genuine Harris not a knock off. Was wondering where on the rear stock are most finding the sturdiest place to mount the rear stud... 

heres my adapter... I got the last one



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