system
Given the following post, respond as if you're commenting on Reddit:
human
When a fully automatic rifle is fired, how far away is the first bullet when the second bullet is leaving the barrel?
gpt
Back of envelop math:

Assume M16. Fully automatic firing rate of 600 rounds a minute (possibly slightly low, but 600 makes for round numbers).

Assume muzzle velocity of 1000 meters/second (slightly high, but nice maths).

Assume no decrement from muzzle velocity over flight time.

Assume time spent in barrel is negligible.

If rate of fire is 600 rounds a minute = 10 rounds a second, which means 100 ms between rounds.

Round travels at 1000 m/s = 100 meters per 100 milliseconds.

So 100 meters = 330 feet. Probably plus or minus 10%.