OK I'm just going to post these up real quick so you know one good way to use the BR

-Keep a lower sensitivity so your BR is steady. That way you don't freak and go to fast and don't get a single shot hit.

-If your against a Carbine be careful. I've watched it tested and Carbine beats BR. So if the guy has a carbine. be quick and do your best to get a 4 shot.

-Lastly for strafing with the BR there is long and short strafing wich is moving side to side. mix it up and if you low on your shield only then you should jump to surprise them and hopefully change the outcome of the battle.

These are my tips for Halo 3's Battle Rilfe