Difference between airsoft BBs?

Question

how much can precision of a rifle change if i used unpolished .3g 6mm BBs instead of polished ones? is it also ok if i use metallic BBs instead of the standard plastic ones? they all curve off, which is really annoying, but what are the properties of a BB that can be the best for a sniper rifle?

Answer 1

I didn't know they made cheap .3 BBs.  Polished is what you want to shoot.  

I'm not sure they make 6mm metal but if I got hit with one I would destroy that chap gun you have that curves BBs.  Use at your own risk