1200 at an airshow. Most of them sucked, I was a n00b, and simply did not have enough focal length for the small planes, so they turned out too small. (70-300 at 300.. and that's 480mm on a crop camera!)
However I did land one of my top favorite shots of 2006, blew that one up to 16x20" and it was magnificent. It also helped that the plane was a (relatively) very much slower Airbus not some jet fighter running at the speed of heat. Of course the F15s are interesting to watch.. but they don't photograph so well. Actually I did get some decent photos, but a comparatively low keeper ratio.
This is where I also found out a couple of things -
Against a blue sky, the aircraft images compressed so well they were large JPEGs written to disk at the equivalent of medium JPEG size - just 1.5MB instead of the usual ~3MB. At medium JPEG sizes, the 350D's buffer is infinite or nearly so. I know because I was letting go 60 shots straight while the jets were turning and climbing, and the 350D simply does not have that kind of buffer, period. My 5D does, but the 5D would be many, many more months in the making.
I also discovered that the 350D's battery can deliver 1.2K shots - on a partially depleted battery. I'd forgotten to charge and change the battery the night before, and it was only at the end of the shoot that I remembered something odd - that I had not changed the battery. And it still had one tick left on the indicator.... wow. I had a spare in my bag, which no doubt contributed to this awesome performance. (Murphy's Law: If you don't have a spare, the battery will quit after 12 frames. If you DO have a spare, the battery will last seemingly forever even when partially discharged.)
I've never done that again - nowadays I am very much more conservative about how long I hold down the shutter. However, I don't regret doing what I did in those days - everybody has to learn somewhere and that was my learning experience. The 'run rate' will go down as your experience goes up.
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