How do we keep track at
500-1000? Spotters [people, not just glass] and steel targets. Reactive targets tell you where they were hit, high, low, left, right… splash in the dirt tells you if it was a miss. Flashers on targets help too - I’ll often put a big check target downrange with smaller targets which challenge my raw precision at that distance, so if I can hit the big target and see how it swings, then I’ll adjust to center up, then see if the group is tight enough to hold onto the little targets too. Bullet wake/trace can show impacts if your spotters are skilled at watching it.
Or you have guys working the butts downrange and plugging [spotting disks] into your bullet holes.
OR you have electronic targets or target cameras.