You'll need to scour the net for HV 2 Data. My 1954 Speer #1 Manual shows HV 2 Data for the 30/06. With a 150 gr. bullet it shows a starting load of 48
grs. to a max of 52 grs. HV 2 looks to be very close to IMR 3031, just a tad slower, but faster than 4064- 4320.
If you intend to try the powder, look it over good and check for any deterioration like and acid smell with rusty colored dust. If it shows any of that, dump it.
I actually salvaged a couple hundred 1918 US Cart. Co. USGI M1906 ball ammo cartridges. The ammo had hang fires. I pulled the bullets and powder. I weighed the powder from a number of cases and came up with an average. I took the bullets and powder and reloaded them into newer cases with new primers.
The ammo shot fine out of my 1943 1903 A3.
I've used up a lot of very old powders that showed no deterioration.