User blog comment:IamJakuhoRaikoben/Chapter 473: Red Lightning, Review./@comment-87.117.37.237-20160215161733/@comment-7418318-20160215173633

The problem is that Mercury Fulminate is such a weak explosive that it was only used as an igniter for the stronger (i.e. the actual) explosives. There's no way it would be enough to damage a chassis that could withstand one of Laxus' punches.