I was just wondering why old Rifles like my Swedish Mauser start at 300m and end up at 2000m when you probably can't kill a man out past 200 yrds (approx 200m) with iron sights. I had to build up the blade at the end of my barell to even sight in for 100yrds. Even with a high powered scope 2000m is really pushing it.
I suggest reading about the British experience in the Boer War before believing too firmly that 200 yards is a maximum range with irons.
I heard a British expression, supposedly from the Boer War “keep away from Officers and white rocks”. Boer riflemen engaged and killed Brits from 600, 800 yards with iron sights. I assume they would use white rocks to zero in at range.
Camp Perry “Rattle Battle” was shot with 03’s using BAR’s as sweepers. The 03’s used the battle sight (zero 547 yards) at 600, 500, 300, and 200 yards.
Basically pre WW1 rifles had sights that the zero was based on hitting a man out to 800 yards by aiming at the belt line. The rifle cartridges of the era were very powerful and the trajectory was as flat as pressures and powder would allow.
Skill full riflemen with irons could engage targets at distances that modern's cannot conceive of engaging with anything but scopes.
Scopes are better, but back then, not many scopes were around, they were big, bulky, easy to break, external adjustments, and they did not have the coatings we use today.
Extreme ranges, such as 1200, 2000 yards, this was volley fire range.
Unfortunately it took lots of training to raise the skill levels of troops to where they can engage targets at extreme distance. Training requires money, and troop training has a low priority compared with money spent on major weapon acquisitions. It is all about the money, so troops today are not expected to engage targets much beyond 200 yards and are trained accordingly.