I'm useing 3 6x24 IOR set @ 18x and a 3-18 set @ 18 so the hash marks are MOA instead of ˝mills. The 2 fixed IOR 16x's I have to set the drop charts up in ˝ mil but they are on guns that have very close trajectories. Have a Sightron 3-9 mildot on my calling gun in 223 and a Tasco 3-9 on my 22lr.
Once the guns are zeroed the dials never get touched, drop charts are worked up for every dot or hash and holdover is figured out from there.
Works fer me as I dropped my goat on Wensday @ 455yards and a mulie on Thursday @ 619