The Boonie Packer Sling system takes all the weight off of one side of your shoulder/back and allows you to carry the gun essentially at the ready. It mounts to your already attached studs, with loops that go "up" over the barrel in the front, then "back, and up" over the butt........for right handers the sling goes over your head onto your left shoulder, with rifle being carried somewhat sideways (if you prefer), with barrel to the left, butt to the right, right side up. You raise gun to fire, loop over butt falls back when you shoulder the gun. Lower gun from shoulder and the butt goes through the loop again. Its just like carrying the gun in both hands when stalking a critter, but the sling supports all of it. This is the only system I'll use for big game hunting ever again.
Do a google search, I'm sure they'll come up.......they are in Salem, Oregon and I'm not positive but they may be marketed by Uncle Mikes.
Regards, RR