Good luck in your search for a .308 Norma Magnum. There were few gun makers that used this caliber. You might contact the Danish gunmaker Schultz & Larsen through their website, and see if they are still making them (they developed it) and who is a distributor in your home. Ammunition will also be very hard to find, and extremely pricey.
Doubtful. The .308 Norma Mag was a fairly short lived cartridge, and competed with Weatherby's own line of magnum rifle calibers.
The cartridge in question is the .300 Winchester Magnum, and not the .308 WinMag. The .308 cartridge is about 16mm shorter than the .300 Winchester Magnum casing. The two are NOTinterchangeable.
50-1000 USD depending on specifics
The 308 Norma Mag is beyond a hunting rifle. It is more of an AMW. (Anti-Material-Weapon) or a very long range sniper rifle. If the rifle is in good shape and still has the standard wood stock and medium barrel, I would say it is worth $1,000.00 American dollars.
Norma makes ammunition, not rifles. Accuracy will depend on WHICH rifle is firing the .308 Norma Magnum cartridge. Many are Schultz and Larsen products, others are hand built conversions. Accuracy will depend on whether it is a target rifle or a lighter sporter grade rifle. The round has pretty much been bypassed by the .300 Winchester Magnum cartridge.
A Browning safari grade bolt action rifle in the excellent condition you describe will bring between 1,375-1,500 dollars for a gun with between 90%-95% overall condition,and a good bore. There were not many of these rifles chambered for the .308 Norma Magnum caliber.
Depends on which .300 cartridge you had in mind... for default, we'll go with .300 Winchester Magnum, which is basically a .308 with a longer casing (67mm vs. 51mm). The .300 WM is the more powerful of the two.
There is no such cartridge as a ".308" weatherby, only a .308 Winchester, interchangable with the 7.62 Nato. Once upon a time, Weatherby only made rifles in unique weatherby cartridge calibers, eg. .300 weatherby, .378 weatherby, .460 weatherby, etc. Now weatherby makes rifles in many non-weatherby cartridge calibers, including the .308 Winchester. Do not confuse a rifle manufacturer with the company name that may have introduced the cartridge in which the rifle may be chambered. To further get your head spinning, many cartridge companies make cartridges (all equivalent) in the .308 Winchester caliber including Winchester, Remington, federal, norma, and multiple European companies. The short answer is yes they are the same. If you see a weatherby rifle chambered in .308, (and not .308 Norma Magnum), it is a .308 Winchester caliber (Winchester rifles exist in .308 Winchester caliber). The weatherby rifle is most likely a weatherby 'Vangard' model (a cheaper line of rifles manufactured by weatherby). Top of the line weatherby model rifles are noted for their high prices, ornate stocks and high power weatherby calibers (the .460 weatherby magnum is the most powerful factory cartridge in the world, about 80% more muzzle energy than the .458 Winchester magnum, first sold in Winchester's African model 70 rifle).
A Remington 308 rifle is a very powerful rifle that should only be made available to qualified individuals. This kind of rifle can be found from Gun Broker.
It's a Russian rifle that shoots a .308 cartridge.
It is correct to say that 308 Dpms assault rifle is worth buying.
If you are talking about the 7.62x51 and the .308 Winchester then yes they can safely be interchanged