The explosive shots were the most effective thing as they slammed into his armour, though they were only of the .44 caliber so even if all three hit one spot, which they did, two would get lodged in the incredibly thick gear and one would get to pierce JT's chest and remain in fragments there. The heat though, it dispersed on contact with his ceramic armour plates. JT's retort was simple: Take the explosive ammo revolver and plug three more shots into the Deity.