I understand your frustration with the sounds. I went back and listened to them and I agree that the default sounds are not the same as the actual gun. I was not able to handle an 88 myself, but I did record one firing several shots. Also, the 40mm Bofors, which I really loved and was able to fire. I think probably the 88 doesn't have much sound. It's a bit like the Storch flaps, or the F4F landing gear being hand cranked most of the sound comes from the operator. Plus, I bet the 88 takes a lot less power than either airplane I mentioned, so there wouldn't be much effort.