This picture was taken during early testing and development of the Frankenstud Slingamarig Sling Stud Sling Keeper.....the Gen2 prototype
The unit pictured waz only 1"
Todays units are 1.5" and even more effective...... Gen6
You will no doubt note that my rifle had indeed moved foward "dang ol' gravity" but the Frankenstud Slingamarig Sling Stud held the sling in place.
I bent over at the waist to pick up a penny (an extreme angle test) and even with my arm fully extended my rifle didn't fall because of the Frankenstud.