So I hope y'all are right as a I prefer a rangefinder with a 1.5m rangefinding reference as it seems more useful but the manuals I'm seeing on PO 4x scopes in 7.62x39 have a 1m reference mark (here's in manual
https://www.jgsales.com/manuals/pos1.pdf )
https://www.jgsales.com/manuals/pos1.pdf )