since I couldn't find it anywhere on the net, I just did a bit of number crunching myself (ok, MatLab did it...°°). Listed are the chances to penetrate a vehicle with AVxx and score a Wrecked/Explodes result on the damage table with one salvo.
AV10: 57.51 %
I only just noticed in the Havoc entry that there is an option for an Autocannon at the same price as a Missile Launcher, which is also the same for trrop choice marines. When did they slip that in!
Seriously though, does anyone use them very much in either havocs or marine squads or have any...