In the bombing range part of the training arena there's a series of targets on the ground between the launch and target bases. These are GREAT for practice because you can see from the bomb craters where your bombs are actually hitting. This can also be useful for games within squadrons or just in general between pilots by assigning point values to the various rings on the target and totalling up who would have the higher score based on the bomb craters.
What about something similar, but for gunnery?
For example, I've wanted to hold a gunnery competition in my squadron. I've tried manually estimating the hit percentage but this is very difficult to track because the hit sprites and audio doesn't always match up with the actual number of hits. The .target command doesn't really help too much because it's always at the same distance from your plane range really doesn't become a factor and as a result neither does deflection, etc. So as an idea, what about this:
You have a "gunnery range," consisting of drones flying a straight course. You begin a gunnery pass by doing a "Check Six" on the drone. Each time you fire your guns at the target the system tracks the number of rounds fired and the number of hits. After you release the trigger you get the following message in the Radio Buffer:
System: Hit Percentage X%
This ends the gunnery pass. To make another pass "Check Six" the drone again.