02-15-2020, 03:19 PM | #1 |
Join Date: May 2010
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[High-Tech] [Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
The point of this thread is similar to the point of my previous thread on TL 5-8 firearms in Ultra-Tech calibers. High-Tech's approach to various ammo types is not very standardized and in some cases requires hauling out a calculator, so I thought it would be nice to write up an alternative system.
In this post, I'm going to focus on the main options for pistol and rifle rounds. I'll do grenades and missile warheads in a later post. Extra-Powerful (+P) Ammunition Divide dice of damage by 3, round to the nearest whole number, and apply the result as a damage bonus. Effects on things other than damage are unchanged. Match-Grade Ammunition Unchanged. Subsonic Ammunition Existing rules are okay I guess but if you want a simpler rule using -1 to damage regardless of gun type would make sense. Not sure if that should be worth a -1 or -2 penalty to hearing rolls. Other aspects would be unchanged. Silent Ammunition Unchanged. Solid If you're using "UT style" write-ups for all firearm types, solid ammo will be standard even for shotguns, so this option can be ignored. Hollow-Point (HP) Armor-Piercing Change effect on damage to -1 per die. Otherwise unchanged. Armor-Piercing Hardcore (APHC) Unchanged. Interestingly the rules for TL6 APHC ammo are basically identical to those for TL9 APHC ammo. I guess Ultra-Tech didn't want to put lower TL numbers anywhere even where they would have made sense. Armor-Piercing Discarding-Sabot (APDS) Use the rules in Ultra-Tech. Baton, Beanbag, SAPFSDS, UD Unchanged. Depleted Uranium APEP is supposed to be Ultra-Tech's equivalent of depleted uranium rounds but High-Tech gives a more more finely differentiated set of options. I need to think about how to handle this, and would appreciate thoughts in comments. Last edited by Michael Thayne; 02-15-2020 at 06:22 PM. |
02-15-2020, 04:46 PM | #2 | ||
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Re: [High-Tech][Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
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02-15-2020, 06:20 PM | #3 | ||
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Re: [High-Tech][Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
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02-15-2020, 06:53 PM | #4 | |
Join Date: Aug 2007
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Re: [High-Tech][Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
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I'd put the armor value of bare human skin at something more like DR 0.2.
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02-15-2020, 09:37 PM | #5 |
Join Date: May 2010
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Re: [High-Tech][Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
Now for rounds typically fired as grenades, etc. Generally, explosive damage scales with cube root of weight which holding shape constant is equivalent to (linear dimension)^(1.5). Shaped charges, however, don't seem to follow the usual rules for explosions—instead they just scale with linear dimension. Smoke grenades should have radius of effect scale with linear dimension.
High-Explosive TL6-8 high explosive rounds use the stats of the TL9 version but use the following table for damage: 10mm: 1d-1 cr ex [1d-2] 15mm: 1d+2 cr ex [1d-1] 18.5mm: 2d cr ex [1d] 25mm: 3d+1 cr ex [1d+1] 40mm: 6d+2 cr ex [2d] 64mm: 6dx2 cr ex [3d] 100mm: 6dx4 cr ex [5d] These numbers were derived by using a 40mm grenade as a baseline. They're a little over 80% of the numbers at TL9. High-Explosive Concussion As high-explosive but without fragmentation damage. Shaped Charge Shaped charge warheads become available at TL7. For 18.5mm shaped charge, use the HEAT shotgun round on High-Tech p. 103 (unavailable before TL8). For 25mm shaped charge, see the GD M307 (High-Tech pp. 144-145, I'm guessing also unavailable before TL8). For 40mm shaped charge, see HEDP on High-Tech p. 143. Larger calibers do the following damage from mid-TL7ish through TL8: 64mm: 6dx3(10) cr ex + linked 8dx2 cr ex [3d] 100mm: 6dx5(10) cr ex + linked 8dx4 cr ex [5d] |
02-16-2020, 08:23 AM | #6 | ||||||
Join Date: Jun 2013
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Re: [High-Tech][Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
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10mm: 1d cr ex 15mm: 2d-1 cr ex 18.5mm: 2d+2 cr ex 25mm: 4d-1 cr ex 40mm: 7d+2 cr ex 64mm: 13d+2 cr ex 100mm: 22d+2 cr ex Leaving the last two as 6dx2 and 6dx4, respectively, probably wouldn't break anything too badly (you're at roughly 90% of what the damage "should" be). The above is for TL 8; trend I suggested earlier for lower TL's.
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02-16-2020, 02:59 PM | #7 | ||
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Re: [High-Tech][Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
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Other thoughts: Ultra-Tech's TL9 stats for APHEX aren't that different from some of High-Tech's TL6 stats for APEX. Maybe they aren't that different, at least at the level of resolution GURPS cares about? Similarly TL8 and TL9 thermobaric don't seem that different, but I'm not totally certain about that. EFP I'm really uncertain what to do about because High-Tech only has one example. |
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02-16-2020, 05:08 PM | #8 | ||
Join Date: Jun 2013
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Re: [High-Tech][Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
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Note all of the above are stated to be "warhead filler" in the table; they are by definition stable enough to function in a warhead (although some are more usable than others, which is why I didn't just go with the most powerful warhead filler REF at each TL). Still, if you feel it's more appropriate to have TL 6-8 all use explosives of markedly similar REF for their explosive bullets, even if only for simplification, that's certainly workable. There's a lot of overlap, after all (REF 1.6 is achievable for warhead filler as early as TL 6, in the form of Hexogen). Quote:
APEX has the notable difference that its piercing damage is reduced to 70% normal, just like normal AP ammo. HT's APHEX (TL 7, HT170) functions just like UT's APHEX, although it leaves calculation of explosive damage up to the reader (it doesn't even give a guideline for how much explosive charge, although by comparison to APEX one can assume just south of 5% bullet mass). APHEX is the APHC equivalent of APEX. The explosive damage of APEX and APHEX are likely the same, however. If UT's APHEX tends toward comparable explosive damage as is seen in HT, that's honestly more likely to imply UT underestimating the explosive damage appropriate for TL 9. Whether you interpret that as meaning TL 9 APHEX should get a boost to its explosive damage or that TL 8 and 9 APHEX get comparable explosive damage is entirely up to you. For EFP and similar, I'd be strongly tempted to simply have the damage reduction of general explosive ammo when going from TL 9 to TL 8 be applied equally to the others; after all, all of the explosive rounds in UT see the same damage increase (+1/die) when TL goes above 9.
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02-16-2020, 06:42 PM | #9 | |
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Re: [High-Tech][Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
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02-16-2020, 07:28 PM | #10 | |
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Location: Wellington, NZ
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Re: [High-Tech][Ultra-Tech] Ultra-Tech style write-ups of TL5-8 ammo
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