I fill each shell with as much rock salt
as it will hold.
I then re-crimped the shells and was ready
I was immediately surprised at how light
the finished shell felt.
It felt like it had nothing in it at all.
Shotgun pellets penetrate as a direct result
of the "mass" of the individual
Since the rock salt is so light in weight,
I am already suspicious that it will not
penetrate much at all.