Military Arms Channel did a Youtube video on this very subject.
[video=youtube_share;P5ZB3UfG960]http://youtu.be/P5ZB3UfG960[/video]
This^^^^^^
And this link is also very informative...
ComBloc Ammo FAQ
If you want the most precise ammunition that induces the absolute least amount of wear, then you need to look for some brass cased copper jacketed bullet rounds. And these are not it.
Otherwise, blast on and have some fun!