Jabali is on. Somewhere around 15 inches low according to my Hornady tables, too.

cr; don't rely on our trajectory tables, tho. Shoot it at 300 so you know. We have found the books to be off especially when using different bullets than those shown, but even when bullets are shot that are shown in the tables, it just doesn't work out always.

Shoot from field positions, too, as that alone can have an effect on zero.