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Old 04-01-2016, 04:27 AM   #14
Icelander
 
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Join Date: Mar 2006
Location: Iceland*
Default Re: Bullets: Overpenetration, Tumbling, Traveling

Quote:
Originally Posted by Tomsdad View Post
.22LR really isn't good execution round through the skull.
In real life, it's plenty. The .22 LR is a pretty specific edge case where the DR 2 of the skull and the low damage of the round from a pistol can really produce anomalous rules artifacts in GURPS. This holds especially true for .22 LR designed for shooting people, as opposed to target or plinking rounds.

A .22 LR hollow-point from a pistol performs as a less-than-lethal munition when fired at a skull in GURPS rules. This is not true of reality, where .22 LR hollow-points may be stopped by the skull, but not so reliably that 66% of the time they simply force a HT check to avoid falling unconscious without any lasting trauma, ca 16.7% of the time they cause a wound that an average man will recover from in a week or so and on anything but a critical hit, the worst trauma possible is still not enough to kill even a tiny person with HP 5 (i.e. a child). Hell, it takes a critical hit that does triple maximum damage to have a chance to kill an average person. And that's something like on the order of one in every 5000 shots or so.

Under GURPS rules, shooting someone in the back of the head with a .22 LR hollow-point is a safer way to knock them out without lasting trauma than the beloved-of-movies knock-out punch.*

In my games, I refuse to allow the AD (0.5) of expanding rounds to affect the DR 2 from the human skull. A perfectly realistic treatment would recognise that expanding bullets do penetrate worse in flesh and are marginally more likely to fail to penetrate the human skull, but against that, the penetration of .22 LR and many other small bullets in flesh and other soft mediums is a lot better than its penetration of RHA plate.

*An average person punching with AoA (Strong) does 1d-1 cr. Aimed at the skull, this has only a 50% chance of knocking someone out without lasting trauma and the worst damage result that can occur without critical hits can actually put a normal person in a coma. On that HP 5 child that it's safe to shoot in the back of the head with the hollow-point, 16.7% of punches to the Skull will do enough damage to force a death check (and likely put the child in a coma even if it makes the death check).
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Last edited by Icelander; 04-01-2016 at 05:23 AM.
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