Zinc vs Lead

Has anyone tried using zinc jacketed slugs? I know copper jackets wont work, but zinc is quite a bit softer than copper. Not like lead slugs, but still softer.

I'm sure there have been attempts but the pressures needed are too great for our current guns. It's also not a guiding metal like copper, it's not plastic enough.
 
I'm sure there have been attempts but the pressures needed are too great for our current guns. It's also not a guiding metal like copper, it's not plastic enough.

RMR Bullets out of Idaho, who actually makes FX Hybrids, sells zinc jacketed slug. As well as bulk quantities of the Hybrids that FX claims dibs on. Not many know that I don’t think. Nothing against FX at all, I just got to snooping around and found them. Supposedly Zinc is quite a bit softer and more slippery than copper, according to RMR. I know copper jackets are bad Juju for air rifles.
But thanks. I appreciate any input.
 
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