Very popular
There's an excellent article posted on the Collecting and Shooting the Military Surplus Rifle website on this. See related link at the bottom.
The 'oven cleaning' method is used for cosmoline removal. See related link 'Collecting and Shooting the Military Surplus Rifle - Low Heat Method' for more information on this.
Hunting, target shooting, collecting,
Target shooting, informal shooting, small game hunting, collecting.
Hunting, shooting, collecting.
Hunting, shooting, self-defense, military
They are used for hunting, sport shooting, and used by the military.
Jeffery L Maxey has written: 'Comparison of rifle defeatable threat criteria and the infantry remoted target system (IRETS)' -- subject(s): Military Shooting, Rifle practice, Shooting, Military
What's the question here? If you're looking for details on the rifle, you can determine the nationality by the arsenal markings, and other features of it. The SKS was manufactured in the former Soviet Union, China, former Yugoslavia, Romania, Albania, East Germany, North Korea, and Vietnam, with the latter three being extremely rare. Enter "collecting and shooting the military surplus rifle" into any web search engine, and it should take you directly to a site which can help you identify these features (can't post URLs in here).
Greek Military surplus, made in 1970. H is for Hellene
Military surplus. No private brand
Depends on which ammo you buy. I am shooting military surplus at about 15 cents per cartridge, but brass cased Remington will run $1 per cartridge.