The
sling I made with lead-cored line
behaves in much the same way as a lighter sling. Of course here we're talking about weighted cords as well as a a weighted pouch (mostly in the cords).
It does it make it much easier to throw "fluffy" objects. Even with a relatively dense/small glans, the cord drag becomes a big factor.
It
feels very quick and controllable. Snappy. Long, light slings tend to lag the throwing mation a bit, which sometimes throws me off, and the cords are likely to get twisted. This one hangs there obediently, and "pulls back" against you hard enough to know where it is.
It doesn't (seem) to make any difference in range/power. The sling in this case probably adds 50-75% to the total mass of the system with my preferred size of rock.
It is
significantly more dangerous to self than my other slings.
The release cord comes around *fast*. My sling is designed to whip-crack, and it is tapered. A proper throw dumps most of the energy into the rock, and then the residual into the oncoiling cracking motion, and the sling falls mostly limp. It is when something goes wrong that you're likely to raise welts, and let's face it, there's no way to avoid something coming back at you that quickly.
I'd
guess that with chain (evenly weighted) cords, you'd get a reflection off the tip that would make the release motion both violent and unpredictable. You can probably get the weighted effect much more safely by ony making the retention end out of chain? Of course it won't crack, but chain isn't the right material for this anyways.
Matthias