can he attract metal that is like 2 km away? or just in radius of him.

I think he can reach into the outer atmosphere and pull satellites down as weapons, then again i may be wrong...

Good question, but it usually depends on the writer. But yeah, I'd put his maximum "metal attraction" at roughly around a mile or 2 kilometers, but I might be wrong.

Deep in the cosmos when he's concentrating! he brought back that giant bullet from Whedon's Astonishing X-Men to save kitty pryde.