I think the idea of spotting shots is well meaning, but in many hunting situations watching bullets impact has a very low chance of showing anything. Out at the range, or shooting rocks, or even plates placed out on public land, 99% of targets I see are in areas where it’s easy to see impacts, which doesn’t reflect hunting scenarios. Most plinking/training is also in great weather with the sun well above the horizon - most folks are fair weather shooters.
More than that, if the shooter isn’t confident the 1st shot will connect with a large amount of time for the shot, odds of a rushed follow-up shot at long range on a moving target are tiny at best. Responses from the very few posts about moving targets shows the average guy struggling to hit a stationary target has no chance at one rapidly moving off dragging a leg or with intestines hanging out. Living in antelope country and watching hunters do what hunter do, if a running goat is ever hit in front of the diaphragm the guy was aiming at the goat in front of it.
My gauge of how far to shoot has always been the single shot at a 10” paper plate - pinned to a bush or tree branch. We have used a single shot on paper plates for decades and it not only provides conformation of an ability to hit at that range, but it removes the false sense of security people get when missing the target completely then excusing it by saying it would have killed anyway, or from spraying bullets until a steel plate is rung - the number of times the bullet impact can be seen is minimal at best. The nephew is often dumbfounded when I’ll drive 1-1/2 hours to set a plate for a single shot, but judging by the number of times he chokes when it’s 4 hrs of work for that one bullet, the pressure is real.
500 yard shots in good weather, with unlimited time on a 2 MOA target shouldn’t be hard, or something is fundamentally very wrong.