Here is a premium, finalized model, all around sling. It's design is largely inspired from a more robust, mechanical model and is intended to exploit modern cordage materials while eliminating grip slippage and hand gouging concerns.
Employing the split pocket design, it is optimized for gripping medium to large sized ammo. And will reliably sling rocks as small as 2oz. up to and including potato sized ammo, all while neatly fitting in a shirt pocket or even clip to your hat.... 8)
The one shown is made of some of the finest Gabon Ebony, including a spring steel pocket clip for easy storage or deployment, and is hard to lose if the clip is used.
Ebony is, thus far, the hardest wood I've worked and is an excellent sling grip material.
The cords are 200lb. test Dacron....the pocket is made of 8oz. leather for durability.
Brass swivels are used for pocket interchangability and to help avoid tangling cords.
All in all, it is one of the better slings I've ever produced....
If one doesn't count highly specialized prototypical versions....
TS