The are rounds in Shadowrun that are designed to be "less than lethal". The most well known of these is probably the stick and shock round, which is essentially a little taser in the form of a bullet: It sticks to your target and gives them a zap, replacing whatever damage code the gun would normally have with 6 stun damage.
This is clearly designed as a way to put people unconscious without killing them at range, right? For normal people, not a problem, but it occurs to me that being an expert marksman rather fucks this up. Why? Because net hits in the shooting test add to the DV of the weapon. Let me give you an example to demonstrate:
My character, Lex, has Agility 7 and Sniper 8, with a smartlinked sniper rifle. Under optimal conditions, presuming I've had a bit of time to aim (+4) and the target is unaware (so cant dodge) that gives me an epic dice pool of 21. On average, a third of dice are hits, so that's an average roll in that situation of 7. So, on average, I can one shot pretty much any metahuman into unconsciousness, as long as they are not armoured. Brilliant, right? no. Because what if it isn't an average roll. Potentially, all of them could be hits, and I could end up with a s&s round doing 28 damage to someone. That's enough to kill them and leave a pretty big hole in the corpse.

Now, I wouldn't have a problem with that were it not for the fact that you get more likely to accidentally s&s someone to death the better a marksman you are, which seems utterly arse-backwards to me. Possibly causing accidental death is ok ("oops, the stick and shock round hit him squarely in the eye, and you have cooked his brainmeat."), but it should surely get easier to knock em out without seriously hurting them the better you are at shooting. Anyone got any ideas how to implement this? I haven't.