Could you suggest a link to educate me on the proper way to use your rifle sling?
I just use mine for carrying it.
BuffaloBill's video explains it pretty well, although I use a much shorter sling personally. Shooting at multiple hundred yards without shooting sticks or another type of aid to stabilize your position all-but demands a really tight sling. I don't go to that extreme, but then again I am shooting a levergun at MUCH shorter distances! You can actually use a sling for pistols as well, but I intend to keep those shots at bow range so it shouldn't be necessary.
Now that I think about it, I wish that guy in the video was my primary marksmanship instructor way back when as he doesn't seem to yell quite as much as I remember mine...
If you aren't afraid to dry fire your weapon - AFTER ENSURING THERE IS NO AMMUNITION IN YOUR WEAPON, INCLUDING THE DADGUM CHAMBER, AND YOU ARE POINTED IN A CONFIRMED SAFE DIRECTION (whew), you can put a small dot on a sheet of paper and tape it to a wall. Snap off a couple in the manner you are familiar with, then practice a couple with your sling and see if you notice the difference. You may not until your next trip to the range, but it will be significant in any unsupported position.
Good luck and do not point it at any 24 year old lady behind a camera like other idiots have done recently.