Those that have talked of mercury often cite its toxicity that would do in the perp even after extensive surgery. I thought of gallium since it wouldn't liquify until impact, but its toxicity is low. If these guys wanted to be more effective with toxics, they could add some ingredients to a hollowpoint (mercury?), otherwise I think the liquid metal idea is just another one of those exotics that don't have much use. I can't think of an application for it.
Are there ANY of the exotic loads {flechettes, etc.) that really are useful? What with all the effort expended on weird stuff, surely some good would come of it.
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