Sorry I didn't see this sooner. I started out using Sierra's banded data on JBM when shooting out to 1000 and found that I was hitting low so I moved over to Litz's data which is .257g7 and found that I was just a bit high... aside from those observations I haven't spent enough time shooting them at distance to give you an exact number but somewhere around .265g7 should get you real close.
I'm curious as to what bullet is used in the American Eagle 75gr load and what it's BC is aswell. They have that stuff on sale at my LGS for 7.99$ a box. Crazy. I think I'm gonna have to get me a 224 valkyrie if they can iron out the kinks. Reloading would be awesome.