I ran the different scenarios you had listed and actually the IMR #4831 seems to be the best of your options. I couldn't locate a Berger 140 gr. VLD in the .264 listings,... the only one in that grain weight was a 140 gr. V so that is the one I used in the formula.
Berger .264 / 140 Gr. V
42.0 grains of IMR #4831
Muzzle Velocity = 2779 fps @ 58,138 PSI (MAX PSI = 60,191
Projectile energy = 2,400 ft. lbs
COAL = 2.800
CL = 2.030
25 in barrel
Hope this gets you in the ballpark,...