Just more B.S.,
Percentage of Antimony, is NOT a scale of hardness. The manufacturers know this and continually state these ludicrous claims.
The ONLY platform for the testing of shot hardness, is and will always be, The Hardness Test. We all know that STEEL is much harder than lead shot. How much Antimony is in STEEL shot? Absolutely 0! This is a legal way to fool the consumer into believing storytails.