Reality-testing / Playtesting the Guns Default . . .

Eukie · 02-24-2016, 11:14 AM

GURPS does all probabilities with a 3d6 distribution, which gives a cumulative distribution of, roughly, the Gaussian Error Function.

Shooting at a circular target in the real world tends to follow more of a Rayleigh Distribution.

Since these two distributions are not the same, it'll be basically impossible to have values in GURPS that correspond to the entire range of real-world values. You might find some sweet spot where GURPS is a simulation of the real world, but GURPS isn't a good model of shooting to begin with, so your results at the gun range are partially just a result of that.

02-24-2016, 11:14 AM	#8
Eukie Join Date: Dec 2013	Re: Reality-testing / Playtesting the Guns Default . . . GURPS does all probabilities with a 3d6 distribution, which gives a cumulative distribution of, roughly, the Gaussian Error Function. Shooting at a circular target in the real world tends to follow more of a Rayleigh Distribution. Since these two distributions are not the same, it'll be basically impossible to have values in GURPS that correspond to the entire range of real-world values. You might find some sweet spot where GURPS is a simulation of the real world, but GURPS isn't a good model of shooting to begin with, so your results at the gun range are partially just a result of that.