Weaponized Math Zeroing Range ?

I would think it matters more at the farther distances since 1000 yards is 914 meters and the drop for some cartridges is getting pretty pronounced.

Does a almost 10% error in yardage matter.....🤷

Difference in a 308 at 1K and 914 is 11.1 versus 9.4 mils.

Agreed. It is set up for yards. AMERICA!
You'd have to crunch it out to see how it would compound over distance. If you stay with meters the whole way I would think the error would be lessened as you do the incremental corrections between each 100 meters. TBH I'm curious.