Quote:
Originally Posted by vierasmarius
True. Presumably the wounding calculations Douglas Cole used involves some combination of calibre and velocity, and GURPS doesn't take velocity into account except to distinguish between 4-8mm pistol and rifle rounds. Calling it pi would be consistent with RAW firearms, which is makes sense if you aren't planning on recalculating all the guns from HT.
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Yes, for simplicity you just want to use pi.
I would honestly use the "AP Damage" line {0.98} for nearly all pistol bullets. It corresponds very well with the pi/pi-/pi+ in that range.
The wound channel modifiers basically are a function of something like the sqrt of a momentum term divided by a KE term (or something related to it; the equations are in the spreadsheet or my article itself).
The JHP line, however, does work out pretty well. It decreased penetration based on the increased frontal area of a squashed projectile, but INcreases wounding for the same reason. Works out decently.
The "normal damage" line looks at wounding when the bullet turns sideways a bit and is probably more correct for rifles with aspect ratio of 3-5 than it is for pistols.