If any fighter sized plane had 30 20mm "holes" in it, it either would not exist anymore, or they couldn't be cannon shells. IMHO. That or the shells didn't detonate. I think in Johnson's famous story, it was 2 or 3 cannon hits that nearly killed him. The peppering with MG fire didn't finish him off, but came close. Take a 47 up in AH and have a buddy hose you down with the machine guns only from an FW. I bet you can take one crapload of them before going down.
I will say that I have been absolutely reamed in my P-47 several times and kept flying. Not long ago I was on auto-climb typing away and BAM BAM BAM BAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAM! A Yak had sneaked up on me and completely blind bounced me. He hosed me with a solid burst. I freaked, rolled violently a couple times, WEP'ed the beast and headed for the deck as fast as the big Jug could dive. I noticed I still had some flight control. Hitting the damage list I had lost 1 of everything, but still had both wings intact. He must have spread the hits out around the bird. I couldn't believe it still flew. I nursed it home for a landing.
I loved that. Those things do happen when flying a Jug. It's a damn tough plane. Sometimes you die quick when the damage is concentrated, but the damage model seems good enough to me that you also get times where the famous toughness of the Jug comes through!
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Lephturn - Chief Trainer
A member of The Flying Pigs
http://www.flyingpigs.com "A pig is a jolly companion, Boar, sow, barrow, or gilt --
A pig is a pal, who'll boost your morale, Though mountains may topple and tilt.
When they've blackballed, bamboozled, and burned you, When they've turned on you, Tory and Whig,
Though you may be thrown over by Tabby and Rover, You'll never go wrong with a pig, a pig,
You'll never go wrong with a pig!" -- Thomas Pynchon, "Gravity's Rainbow"
[This message has been edited by Lephturn (edited 12-15-2000).]