The Average Taxpayer has just died OR K-Gun ballistics

Because the chance of a hit is the same for any K-Gun at any given range, the only reason for going big is to get more damage when you do hit.

For K-Guns over K-5, there's no pay off in extra damage for extra weight; adding another K-2 will give you more average damage (it's a fraction, but benefits in these things are always marginal) for three mass than going up a size. This is because a class 2 K-Gun adds 16/6 average damage points to your pool, but a K-6 and above adds 11/6 to the pool provided by the next size below it.

So the only reason to use a K5 or above is aesthetic; the model looks like it has BIG guns. And I suppose psychological.

Watch this space for a shoot-off between K and B guns.