Zach,
I think the mistake you made was holding a revolver to his head. You see, when you hold a revolver to someones head they can see the bullets & claim you forced them to do it. But, if you would have used a semi auto he couldn't have seen the bullets & he could only say he feared for his life. Theres a big difference in knowing your going to get capped & only thinking you might get capped, just ask any lawyer.