On these flip-up sights, what does the »100-150<«exactly mean?
It means that the first rear sight blade is calibrated for the cartridge's GEE (you do know the meaning of GEE, right?), which is about 125-130 metres. Hence the shot would hit point blank at this distance, and lower at a shorter or longer distance. But
between 100 and 150 metres, the bullet will still hit
within the desired 4 cms of the point of aim or below.
The second flip-up sight also shows you that the trajectory parable is quite steep (the typical bullet was a 7,6 or 7,7 grams Teilmantelflachkopfgeschoss).
PS: Those knowledgeable in Austro-Hungarian arms lore will wonder whence my apparent certainty about the measurement unit cometh, since Austro-Hungarian *military* arms were calibrated in "Schritte" (paces), like the Russians (arshin, which is longer), and not in metres. Well, simple: it is merely a conjecture. For civilian use, the metrical system was introduced already in 1876. And the first blade (there is no fixed base step here) usually would be calibrated at the GEE.The GEE is farther away with this cartridge, than a measure of 100 to 150 paces.
Regards,
Carcano
