Sling shot

I just bought a barnett black widow and it came with some plastic ammo and was wandering are black widows good? Also could plastic ammo kill a rabbit or duck

I use 32cal led balls in mine to hunt.
Steel is good but a little light.
And plastic is to light to penetrate.
It looks good to me and it got good reviews on amazon. I don't know about duck/rabbit hunting though.
it looks pretty good to me. it got good reviews. I don't know about rabbit/duck hunting though.