As HiBc already mentioned the Nosler #6 loading manual has the IMR4350 as their top performer, I second that, I also use IMR 4831 with the 150 grn Ballistic Tips.
Now if you move up to 160 grn Accubonds, I use the IMR 7828 for that.
The Hornady Custom ammo that features the 139 grn BTSP is also very accurate out of my 7mm mag.
I have also a 140 grn Accubond load using IMR 4831 for it.
I digress now....