Let's see. If I cyphered this rightly... a fast shooter will shoot one every 10-15 seconds or so. Most don't. At 15 seconds per, there are 4 shot per minute. 1,000 divided by 4 is 250 so it takes 250 minutes to launch all the arrows.
250 divided by 60 (minutes) is 4.1666 (hours) of constant shooting at the rate of 4 per minute. That time does not include walking down to the target (and back) to collect your arrows.
I shoot a lot in my basement but I guess I don't shoot 1,000 a day. I better stick with " lost track at 25".
ChuckC