Zulus Balistics calc.

[kenbro]

GIGO. Garbage in, garbage out. But I was caught out last week. Friend wanted to buy my spare Zulus. Before we went to the range I manually input his data directly into the Zulus.
On the range we zeroed it at 100yds then used the LRF to check at 200yds. Miles out. I couldn't get it to work. Took it home and factory reset then used bluetooth to transfer the Ballistic Table to the scope. It worked perfectly after that. I still don't know what I did wrong in the first place .

I use a ZV2 now and didn’t use BT to set it up.
Zero at 50 yards and correct at 100 and near as doesn’t matter at 200.
Not tried farther.
KB.