In SR1, Burst Fire was interesting (they simply called it Autofire since at that time modes of fire didn't exist).
You could fire a number of bursts = your skill + 1 (max 7) per attack. The recoil was based on the number of bursts (as the +TN penalty) and the bonus was +1 weapon power (no staging bonus). This means if you had Init=24, you could get off 3x7 = 21 bursts or 63 rounds in a 3 second Combat Turn. I am not sure how that compare with real firearms, but it's alot more bullets than SR2 or SR3 allows.
It's funny I haven't played SR1 since SR2 came out, and it took some reading and re-reading to resurrect it from the brain cells killed off by mass consumption of beer.
There's more to it, this just made for an interesting view of how things used to be handled.