At the end of Suicide Squad:
Harley Quinn cuts out Enchantress' heart. Rick Flag asks Killer Croc to throw a military-grade explosive into Enchantress' weapon and Deadshot shoots it, forcing it to explode.
According to IMDB Goof's, it states,
Military-grade explosives do not explode when shot at; the (sic) require a blasting cap to be set off. This is a safety feature of such materials.
However, it is observed that shooting a grenade or fuel tank causes it to explode. Is this not possible with the explosive used in this scenario?