Durability of aircraft to MG (< 8mm) guns

[JAMF]

Originally Posted by winny

They were looking at how many rounds it took to actually set the whole fuel tank on fire.

I don't know if German fuel tanks were any better protected than Blenheim ones, so that could be a factor. Plus the tests were done on the ground so you don't get the effect of the airflow either putting out, or intensifying the flames.

And no aluminium skin to deflect some energy from the rounds, before hitting the tank?