More than likely. The 20 yard mark is where you start, you shoot at that. Then the rest is for tuning.
Once you have found your 20 yard mark (Where your 20 yard shots hit center), move to 30 - after adjusting alittle to find where it hits center for that, then go to 40 and do it again, mark the tape at each yardage.
Usually those come with like 40 different tapes with pre-determined ranges already printed, and based off where your yardage on your sight tape matches up, it will then tell you what tape to put on. My girl has a single pin that this has to be done with also.