this rifle was zeroed @ 300yds by the manufacturer. This ladder sight goes from 4 - 18
Yeah, but with what ammo? The Spanish 7X57 started out with a 173 gr round-nose at about 2,300 fps, and switched to a 139 gr spitzer at 2,700 fps just before WW1.
With the closest mark 400 meters, it is going to shoot high, but you have no way of knowing where it will hit with any ammo without taking it to the range and trying it with the ammo you plan to hunt with.
The good news is that there are higher front sight blades available for most model Mausers, and you can probably work around it.