Rifle Scopes leupold Mark4 M1 turrets question

Impact

Sergeant
Minuteman
Feb 19, 2007
641
2
Los Angeles,CA
what is the default factory position on the M1 turrets ? all the way down or do you still see some of the horizontal lines on the elevation turret ? do you zero it starting from all the way down or half way ? thanks.

reason I asked is I got to shoot a rifle that was zeroed half way on the elevation turret