You have not given enough information to answer your question. I need to know the bullet weight and the zero distance.
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For a 150 gr projectile with scope mounted at 1.5 in above the bore .. should be about 1.5" high at 100 yd, zero at 200 yd and 8 in low at 300 yd
Norma factory loaded ammunition. A 180 grain Oryx bullet is the only factory load available at this time. The drop at 100 yards is 0 inches. The drop at 150 yards is 1 1/2 inches. The drop at 200 yards is 4 1/2 inches and the drop at 400 yards is 16 inches according to the factory.
If you google "308 Norma ammuntion" you will have a start
Yes
1960
100-1000 usd
100-400
Doubtful. The .308 Norma Mag was a fairly short lived cartridge, and competed with Weatherby's own line of magnum rifle calibers.
The .30-06 is 12mm longer, and has a flatter trajectory.
Find a gunsmith and ask for help.
Get it to a gunsmith now.
50-1000 USD depending on specifics
If you don't have an owner's manual, go to a gunsmith and ask for help.
Either 1-10 or 1-12