so do you think 21 20 mm hispano hits to kill a Yak3 is BS, or what is ?
respectfully
save
Yak-3 fun bird to fly, tough bird, hardly think a oneoff instance is a good measurement in its resistance to fire, do a live fire test 5 - 10 times, show us the results.
Placed a bunch of Yak 3 in the drone circle. Shot at them with many different fighters.
1. - The small size requires precise aiming.
2. - Dead 6 shooting eventually gains fuel leaks and maybe a radiator hit and possibly a wing or tail surface. Or just pour it on for a kill.
3. - Deflection shooting is either a one shot kill of the pilot or, pour it on watching parts fall off until it goes down.
4. - Snap shooting 90 off is very hit or miss. The tiny profile requires perfect timing to achieve an oil hit or killing of the pilot.
5. - The MK108 is hard to be precise with and there were a few moments I couldn't believe nothing happened when I hit the Yak 3. A second hit usually finished the job. The 262's 4 MK108 never had problems when I could hit the Yak 3.
Knowing all of the above now, and online with connection inconsistencies and other conditions in play. The Yak 3 is just very hard to hit online.
The Ki-43 and I16 being about the same size are much easier to destroy under all of those conditions and online. So can we get them upgraded to be like the Yak 3....... 
I think a better comparision would be an Yak-7 or a LA-7 similar in size design and shape, KI43 wingspan is 5' longer, profile view is taller, wing area is 230ft^2 in the Ki43 and 157ft^2 in the Yak. big difference there, I16 no one hardly flys it did not bother to look up its specs.
