Steve, what's your averge rounds per kill w/ the 50 cals?
Don't know about Steve but I, on average use less than 100 rounds per kill. I average around 7 kills per sortie and I find myself usually landing from lack of fuel rather than lack of bullets. An average sortie will see me returning to base with around half of my ammo load (I take the full 2000 round load out). Last week I had a 12 kill sortie and I had over 1000 .50 caliber rounds and 150 cannon rounds (forgot to switch from DTs to cannon) remaining.
On the other hand, there have been some flights were I've only gotten one or two kills and have just a few hundred rounds remaining but on average, I usually end up with quite a few rounds left over.
At least to me, it shows that when I hit an area like the wing root or tail section (the two places I aim for) and hit with a burst at close range (I tend to fire at 400yds or closer) I tend to kill the target with that burst. However, if I fire at longer ranges (600yrds+) I tend to waste more bullets than anything else and it usually takes more ammo for me to down the target. I also don't have to worry my pretty little head about convergence issues, so all of my bursts hit for maximum impact.
ack-ack