Thread: Copper cover lead shot

Can anyone explain the rationale behind the copper covered lead shot manufactured by Elley.

I went in looking for some non toxic shot for an older shotgun and was pushed towards this.

When I asked if it was legal over water, I got the nudge nudge, wink wink and was told that it's up for the courts to decide.

Does the copper coating provide any benefits, or is it just a lazy attempt to circumvent the lead restrictions