BBM .. the thing for me that makes me believe that OP was wearing his prostheses was that Mangena said that, on his stumps, he would've put his arms straight out directly in front of him (I'm picturing Mangena showing this to the court with his own arms) .. so, if OP was on his stumps that might work and be the right height for the holes in the door. The only thing is that OP himself said that he did not have his arms straight out like that and that he had his arm bent, in which case, if he was on his stumps that arm would be too low to have placed the holes in the position they were in the door and therefore if we go by OP's testimony, i.e. shooting with a bent arm (and it was really quite bent, Roux made him go into quite some detail on this, I remember .. he had him with the top half of his arm by his side and just his forearm towards the front pointing the gun) then he has to have been on his prostheses in his version, he cannot possibly say he was on his stumps AND have a bent arm like that, the measurements do not add up. As I said before, Mangena only had him on his stumps if he had his whole arm outstretched, but according to OP that was not actually the case.