Your picture shows 5.5 wraps – a full wraps means the leads are facing the opposite direction. Still doesn’t come out to 0.213 ohms but worth noting none the less.
The coil calculator will never exactly mimic your coil for there are way too many variables - however, it should come close assuming you are using the same gauge and type of wire. Do you have another
device to verify your build? If your
device does not indicate a short, and your resistance is within it's operational range, you are safe to use it.