Korsun Pocket Mission - Can't Destroy Tanks!

[kronovan]

I completed the game on realistic a while ago, so I've been working through the missions. I'm currently on the Korsun Pocket mission where I have to destroy tanks in Stalingrad with an IL-2 - sorry can't remember the exact name. I'm certain some of my attacks are hitting home, but no matter how hard I try my bullets just seem to bounce off. I've tried ordering my wingman to attack tanks, but they don't seem capable of destroying them either. I'm actually surprised that my plane isn't equipped with bombs, as I seem to recall having them available for such missions in the main campaign.

I'm willing to admit I might just suck at such ground attack techniques, but I don't remember having this much problem using the P-51. Just in case the mission is bugged or actually broken, I thought I better post here.