Quote:
Originally Posted by Varyon
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For the first, that was in reference to the action/reaction bit - that is, if a bullet can push a person back a yard then firing it should push that same person back a yard as well. As Knockback Threshold is based on HP, and HP is based on ST, it makes some sense to assume the typical wielder of a weapon will have HP equal to or exceeding MinST, which will give us the amount of Knockback the character would suffer from firing the weapon without properly bracing himself for the recoil (there are no rules for adjusting Knockback when there is bracing involved, but it would make sense to reduce Knockback in such cases). To my knowledge, there aren't any firearms that the Knockback calculated using my proposed houserule would be enough to knock the firer back a yard or more (there's a musket in HT that comes dangerously close - 4d+1 pi++ and ST10 - but none that actually reach this point). Bows and crossbows might be a different story, but that's an issue with the unrealistic ST-based damage table.
For the latter, I calculated the impact damage using the Collisions rules from Tbone's GULLIVER rules, which are designed to be more realistic than the default GURPS rules. I only calculated it for three projectiles, however - the 5.56x45mm, 7.62x39mm, and .50 BMG - and extrapolated from there, so the actual crushing damage of other bullets may not be as suggested in my houserule. Unrealistic Knockback results may be more an issue with the Knockback rules than with the crushing component of bullets.
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Ah OK I have to say I don't know those rules
I think my point is I'm not sure such a bullet can by itself push a target back a yard (so don't need to worry about pushing it's firer back a yard and so doesn't need to be tied to MinST)
A 7.62nato is going to have about 8.3 kg m/s momentum? That will push a 100kg target (say are reasonable sized man wearing enough torso DR to stop the bullet penetrating and other kit) back at 0.083 m/s. And that's an inelastic collision no friction etc.
However as said knock back is likely other things as well than just physics, but bullets don't have that much momentum
There
was a thread that touched on this just recently (and my later rules suggestions were wrong because of this!)
Quote:
Originally Posted by Varyon
Again, the previously-linked thread has this effect built-in..
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Cool
Quote:
Originally Posted by Varyon
With a swinging attack you have a bit of build-up of momentum during the swing, which you don't have for pulling it back out, so it's harder to pull back out than it was to initially put in. This isn't the case with thrusting. That's the idea, anyway - in reality it's certainly possible to get a thrust impaling weapon stuck so that it takes a moment to pull out, but (outside of barbed weapons) this is treated as below GURPS resolution.
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Yeah I think tying it to damage done covers that (thrust damage being less than swung for that very reason)