I was using +106 chr gear. Admittedly, I wasn't wearing optimal gear. My charming set has been neglected since the inception of Abyssea. These high level mobs are in Woh Gates. I successfully charmed one, once, then two hour'ed. Since then, I haven't been able to charm any more.

They gauged difficult. I did not try to tame them first. I'm not sure what effect that should have. But after a failed charm, I have tame in the same macro and I was also unable to tame them.

Also, SE, is charm affected by magic accuracy?