I got your point, Andy!
Now saying that you won't do the Copperhead because it is too unpractical to be used while adding that some better similar rounds are available is no coherent excuse!
Anyway, as you said, the auto-guided rounds (I had the BoNuS particularly in mind) are more easily reproductible as "high-concentration", low-HEK DPICM-like (game's AP) rounds. Actually they tend to have a precise scanning zone (which size? no idea) and some dud rate, which will account for the odd shot falling in the wrong hex and killing no one.
Now that is well done in the game (as in the STRIX-firing AMOS) and can be exploited, though if you have time for some OOB upgrade, seeing such things in more countries would be a nice plus!
Cheers,
Plasma