In a mass driver thread, you will be waiting a long time.

Edit remember when they nerfed the MD incase it became too OP when fixed due to an in office game where they decided that one game was better for determining the stats than months of feedback/data gathering? Yeah I remember an MD thread then about why nerf it before it works reaching 15-16 pages and no blue posts (+ similar for other weapons to be fair.). They may look at these kinds of threads (and hopefully listen) but a dev post in threads like these are few and far between, although to be fair they seem to be getting better at communicating with us lately. Also Mr IWS where is the concept art for the new suits I remember in one thread you said you had seen them and they looked great but we weren't getting to see them till they were exactly what they looked like in game allot of people said they would like concept art so you know pretty please go pester an artist for us.

The only way to kill efficiently with the mass driver now is to use grenades.

Find an enemy, cook grenade, let go when you hear the beep, start spamming mass driver rounds til they're dead.

It doesn't kill very fast, but it does hit people around corners.

It's an explosive ordnance. A hand grenade kills. Remote explosives can kill tanks. The mass driver gets the user killed.