I broke out my old stevens mod 120 single shot 22 today. I bought some winchester super x high velocity ammo. It says it's plated. Can anyone tell me what it's plated with? Will it wear out the barrel, effect accuracy or power? I also bought a cheap tasco scope for $7.00...wow what a piece of junk..I guess it's worth every penny I spent. How much do I need to spend on a scope for this 22?