Or, for $30 or so, have a turret that exactly matches your load in your increments out to your max stated range.
The problem with dope cards (and with this) is it's only really correct for the conditions you enter when you make the card or turret tape.
For most of my hunting the differences were conversational between altitude, temp, moisture, etc. when I made the dope to send to these guys and the conditions when and where I hunt.
https://customturretsystems.com/There's a lot to be said for keep it simple.
