That is the exact same load I have been shooting for the last 2 seasons (in a WW case with PMC LR primers). I have killed 11 deer with that combination from 112 to 326 yards, including 5 does with head shots. My rifle is a McMillan Signature with a 24" barrel contoured like a Remington Magnum Sporter mounting a 3.5-10x40 Leupold VX3 with CDS elevation and windage turrets. It shoots very well (sub 1" at 200 yards).
To the original poster - I have been shooting that rifle as my "go to" deer rifle since 1988. The .280 is an excellent round. Like one of the other poster's said "7mm on a lengthened 06 case, what is not to like?"
It isn't as pretty as Zeus', but it delivers.