I don’t believe there were very accurate rangefinders like we would have today so they really needed to zero their sights on the exact area they anticipated the

I don’t believe there were very accurate rangefinders like we would have today so they really needed to zero their sights on the exact area they anticipated their targets being. They could accurately discover the range via test shots, adjust their scope, aka “zero” it. I don’t think they had mildots on their optics back then