Rules help with Omya Kaboom

[director_slayton]

Okay, I recently watched 2010's "The Expendables" with a couple of my players and one of them recently asked a serious question-since he's from a backwater planet that has alot of Earth-like Firearms including the player's own AA-12, he wanted to know if there was any chance of having the kind of rounds that Hale Casear uses in the movie for his AA-12. The exact quote is the following about said rounds:

Hale Caesar: [sitting across from Toll Road on a plane] You know what? I trust you. I want you to meet my girlfriend: [holding up shotgun shell for his AA-12] Omya Kaboom.

Toll Road: You lost me there.

Hale: When Omya's prime is struck, she give off a miniature warhead that arms itself. And when that happens, anything that gets in my lady's way becomes instant red sauce and Jell-O. And if that doesn't work... [holds up a razor with "Caesar" engraved on it] Her sister will.

Toll: You should meet my doctor.

Hale: Too late.

So since I like to spice things up for my players, I'm trying to honor his request so can anyone help Superior Sirs?
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[Fallon Kell]

Some characters in my games will use micro concussion shells as ammo for slugthrowers. I'd give them 7D damage, falling off at 2D per meter blast radius. They would probably cost around 500 credits apiece, though, so a sustained fire fight with an automatic like an AA-12 could cost as much as a used starfighter.
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[garhkal]

Plus those warheads would more than likely have issues with getting fragged while being carried.
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[Orion]

A 7D explosion from a 12 gauge shell seems a bit excessive to me. A fist sized cube of Detonite is only worth 3D character scale damage and a 12 gauge shell is a lot smaller than that.

I'd do it something like this: An 8 gauge is 5D damage, since a 12 gauge is smaller we'll call it 4D, then I'd add 1D for the explosive, which put us back at 5D. I'd say the blast is intentionally delayed a fraction of a second so it's intended to go off inside the target.

To run this you would need 3 different color dice: 1 for the normal damage dice, 1 for the wild die and 1 for the explosive damage die. Roll all 5 dice. If the results on the normal damage plus the wild die are not enough to cause a wound, add the explosive damage die and run normally. If the dice without the explosive damage die cause a wound then roll an additional 1D, explosive damage die, and add it to the previous total, run normally.

The idea is based of the old adage of a firecracker with an open or closed hand. If you want more damage out of them add 2D instead of 1D to the damage dice when a wound results prior to the explosion. Alternately, instead of adding dice you could simply double (or triple) the result of the explosive damage die.

You could do something similar with armor if the explosion takes place between the armor and the body, either adding the 1D(or 2D) as before or simply just rule that the explosion is sufficient to heavily/severely damage the armor as it's not designed to absorb damage from that side. If it were me, and I wanted to go the add dice route with armor I would probably go with +1D for an explosion between the armor and body and a +2D for inside the body just to give them a different feel.

[CRMcNeill]

Sounds almost like bolt shells from Warhammer 40k. IMSWU, that is one of the primary reasons projectile weapons are still in use is because of greater potential for customization, depending on the mission requirements.
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"No set of rules can cover every situation. It's expected that you will make up new rules to suit the needs of your game." - The Star Wars Roleplaying Game, 2R&E, pg. 69, WEG, 1996.

The CRMcNeill Stat/Rule Index

[Orion]

I've never played 40k so I have no idea how bolt shells work in that game.

[garhkal]

I like that idea orion. Similar to jury rigging, roll 1 or more additional wild dice representing the explosive nature of the shell.. If it causes a wound before the explosive goes off, then add 1d for it going off inside the target. if not, the explosive ricochets off the armor
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[CRMcNeill]

In WH40K, a bolt is a mass-reactive explosive tipped bullet that doesn't detonate until it is inside its target. This is just one possible shell variant that a projectile based weapon can use: homing or guided rounds, incendiary rounds, chemical delivery darts, homing tags, gas rounds, proximity detonated warheads, etc.
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"No set of rules can cover every situation. It's expected that you will make up new rules to suit the needs of your game." - The Star Wars Roleplaying Game, 2R&E, pg. 69, WEG, 1996.

The CRMcNeill Stat/Rule Index

[Fallon Kell]

[Orion]

[Fallon Kell]

[Orion]

[Fallon Kell]

[garhkal]

[Kira Firestorm]

Okay for any of you wondering how deadly the AA-12 shotgun is, it's a fully automatic shotgun with a drum magazine, limited recoil, and comes with a variety of ammo.
Frag-12
Frag-12 high explosive
Frag Heap rounds

so having it do 7D is actually about right with the standard round, watch it on Utube or Future Weapons if you like, it's deadly.
Another option would be to create rules for single/burst and full auto damage for it.
Just note that the HE round can penetrate a window then detonate killing everything in a normal room, and the HEAP round takes out armoured walls and then explodes.

Rules would differ maybe for single/burst/full auto, adding in difficulty but would also add to damage per increment.
Ofcourse blast radius would lower damage over scales.
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