No, we do not.
I wasn't suggesting that we did. I was responding to the claim that the .50 had better armor penetration because the 20mm rounds were heavier and slower. There are some people in this thread basically making stuff up to try to say the .50 hit as hard as a 20mm.
As I recall, the Hispano HE rounds delayed their blast a bit longer than did the German HE rounds and tended to blow up inside the structure rather than on the skin. They also produced larger, but fewer, shrapnel chunks.