SHOOTING HAS A FULL SHARE OF HISTORICAL ODDITIES. THIS PAGE WILL SHOW SOME. No.1 - "MARKING".
The top left picture on the home page shows two square white targets. When you fire at your target you will see it sink into the ground. Maybe it slides into some sort of pouch where the location of your is electronically identified and sent back to you immediately. NOT SO! We live in the electronic world, but the target is still pulled up and down by human effort. It is balanced with a chain and counterweights and looks as if it belonged in a mediaeval torture chamber. It is operated by a 'marker' who is well protected in a trench. He puts a 'spotting disc' in your shot hole and pushes the target up again so that you can see where your bullet hit.
This archaic and expensive method is still used because no electronic method has yet proved good enough and reliable enough. When one is found it will mean replacing 108 stations with 108 new ones. (There are 108 targets on the Century Range - another little wierdie for you.) So the NRA is cautious about dumping a system which is expensive and archaic but does work. Electronic systems do exist, and are used on some small-bore ranges, but the open range at Bisley is more of a problem.