I don't buy it. Laying a bit of monowire across your arm isn't going to make it fall through your arm and cut it off. To do that, you need to weight the thing and pull against the wire. A bit of monowire in your body will move with the skin, it won't be pushing and pulling against it, so it is unlikely to do much damage.

it would be super expensive to make like Glaser rounds.
it's not an everyday use ammo, more like "a message"

you know what the rounds that were tied together were called?

How would that work? Like a duplex round, only with the two bullets connected? Wouldn't that completely fuck up the external ballistics?

Otherwise, I'm sort of perversely with Red here. The small arms "Flechette" ammunition of SR has never been explained (it bears very little resemblance to real world flechette ammunition of any kind) and has never worked logically. M4jykal monowire is as good an excuse for their stats as any. Not that I can see the point in a bullet that maybe causes some damage to the person you hit some time well in the future instead of just causing him/her maximum damage right the fuck now.

Yes, it would mess up ballistics. There have been attempts with wired buckshot for shotguns, but the wire reduces range quite a bit.

Duplex machinegun rounds weren't wired together. Instead, they were designed to drift apart slightly as they went downrange, increasing the odds of a hit. Duplex rounds were abandonned because of reliability issues and the individual round were lighter than a single standard round (though they weighed a bit more added together) which reduced the effective range of the weapon.

Wiring wouldn't really work in rifled ammunition. The spinning of the bullets would cause the wire to twist and knot up. That would jerk the bullets around in flight and throw accuracy out the window.

On the other hand, if you were looking at very short range engagements, there is a kind of shotgun round available today. It isn't like the one described above, exactly, as it only has two large shot. These are connected by a wire and is supposed to act like the old chain shot. If one ball hits, the other is supposed to wrap around the hit too. I'm not sure that would really work though, and the loss of range due to the wire might not be worth it either. It would probably be best just to have a third large piece of shot in there and aim well.

In the real world, flechette hasn't worked that well in shotgun rounds. They have slightly less range than shot and don't seem to have the terminal effect of shot. Being long and pointy, they tend to poke into a target, effecting it less than a larger area ball of the same weight. It has to do with surface area and energy transfer. It may penetrate armor better than shot though, but I haven't read anything about that.

I am curious though. Why make a round that would kill slowly or be hard to clean up when you could make one that would kill faster and take a a threat more quickly?

That's true in a military situation, but it wouldn't apply as much to a Shadowrun. Rather than have to haul the wounded away, a wounded security man would only have to lie there and wait for the ambulance.

Assuming you are fighting a security guard or someone that CAN wait.
does your shadowrunning group leave your wounded teamates behind to "wait" for an ambulance?

Good point. No, they don't. They have had to leave badly injured runners with the street doc while they carried on though.

While logically sound, that theory relies on the assumption that the enemy won't kill their own wounded. This assumption is not always correct.

Exactly.

Right, plus there's the problem of attempting to correct the flight path of a statically stable bullet by pulling at one end of it.

Yeah and I bet it be cheeper to.