I like Western Powders. I use a lot of it for jacketed loads. That said, there IS something screwy with their data at times. I've put my 556 and 7.62x39 projects on hold for now due to extremely high velocities at starting loads. These velocities often met or EXCEEDED the max loads. Had I started at the max or near max I'm confident I would of blown both rifles to bits.
BTW, these loads were from their published data!