Miles, any time you shoot something at an extreme angle like that a bullet has a good chance of deflecting. Barnes are not immune.
If you'd pay attention you would see that I am saying that the performance of Barnes in similar situations have not deflected and it was quite surprising. NPs have shown me that they are no different than any other lead core bullet. I have seen many deflect in just that kind of situation.
I am looking for answers to why some of this is different because the number of opportunities for deflection I have seen with Barnes is telling me it's outside just chance. There is really something different going on.
