what I did say is by late '43-'44 onwards both cannons and the .50 BMG where reliable weapons with reliable effective ammunition and any fighter receiving a solid hit by them was either disabled at best but most likely destroyed, either way the aircraft was no longer in fighting condition and the pilot was nursing it home if possible. And just a final point, one of the top scoring P47 pilots, Neel Kearby was shot down and killed by a Ki 43, an aircraft armed with only two 7.7mm, one 7.7mm and one 12.7mm or two 12.7mm machine guns, so the toughest most rugged fighter made shot down by what was arguably the least rugged and lightly armed one, I'll stand by my statement that any fighter receiving a solid burst of fire is in trouble.