Found it on the Western Powder (Ramshot/Accurate) website! They have a reloading manual on PDF file that is quite extensive.
Bullet: 40 gr Barnes Varminator
Powder: Accurate 2520
Start at 34.6 gr (3673 fps) and max load is 38.5 gr (4174 fps) with max pressure of 61800 psi.
I don't have any A2520 in my ever bloating collection of powder yet but I may have to get it now. After all this hassle, these f***ers better shoot lights out.