This ballistics aps, for that bullet, shows 8.12" drop @300 - which is pretty much exactly what I'm seeing.
http://gundata.org/ballistic-calculator/
Not sure if this one is accurate or not, and don't know if the muzzle velocity that if defaults to is accurate or not.
I'm also not a "shooter" - I am thrilled when my groups stay under .8 MOA or so @ 100.
They seem to open up a bit out at 300 in my untrained hands to >1 MOA for me.