With my Gewehr 98 I have to aim about a foot and a half below the target at 100m, the good news is it is dead on windage wise. I was shooting clays with it at 100m destroying them quicker with irons than my buddy was with his fancy SL8 with a modern scope.
I really wonder what the Germans were thinking when they decided to only have a 400m zero, they had a 200m when they had the earlier Patrone 88 but 400m is excessive, even for the era.