Iv'e flown 29's quite a bit, and if you're upping a formation - DO NOT DO HARD TURNS.
Fighting in it? Easy, you've got literally thousands of rounds for each gun and can hold down the trigger and spray as much as you like, and still have ammo for the next guy.
Fighting against it? Good luck, make high speed passes with cannon rides from far above them. They're very tough and very well armed. Do not ever for the love of all that is good and right in this world line up on it's dead 6, or anywhere near it. You'll get shot down from 1k out. 3x 20mm's on you will destroy you with no trouble, and the other .50 cals will also tear you to shreds.
Head on attacks work best seeing that the nose is pure glass. Shooting at the wing roots and near the front of the plane also works well. Don't try to shoot in the wings though, the engines are hard to set aflame and the fuel tanks don't get lit up easily either.
I'm no expert, but it should be useful to a point.