03-07-2021, 09:38 AM | #11 | |
Join Date: Jun 2005
Location: Lawrence, KS
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Re: Plausibility check for mixed TL3/4+2 firearm
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03-07-2021, 11:42 AM | #12 |
Join Date: Mar 2021
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Re: Plausibility check for mixed TL3/4+2 firearm
We've been told to keep our investment in social advantages (Wealth, status, etc) low, but we'll be allowed to reassign those points as the game progresses. So I could "bank" up to 20 CP in reputation and status, to be reassigned over the course of a few game sessions. The example the GM gave us: if someone started as a cop with a good reputation and a contact, they could quickly impress the locals with their demeanor and "obvious sound moral character" and justify spending those points on earning a new rank and position.
But of course those banked points will be useless in the first session, and will remain useless until campaign events justify reassigning them. It doesn't look like any of us took the trade-off of starting off weak but rising through the ranks quickly. |
03-07-2021, 12:18 PM | #13 |
Join Date: Jun 2013
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Re: Plausibility check for mixed TL3/4+2 firearm
I'm not familiar with Luke's firearm design system, but in GURPS Classic: Vehicles (from 3e), breechloaders are 50% heavier than muzzleloaders, so your weapon should probably be around 2.25 lb.
Your loading mechanism is... interesting. It sounds like, rather than using the paper cartridges normally (where you break it open, pour in the powder, and use the paper for wadding), you want to have the paper cartridge take the place of a metal cartridge, with the whole thing loaded in. Given you're going to be using a flintlock mechanism, I think a variant of an idea I had in the past might work for you. You basically add a small hole where the cartridge is when loaded (which I think you need anyway for a flintlock) and add a very small pin to the rifle (attached by a short lanyard, or otherwise movable; note you want a similar method for the plug). Load the paper cartridge from the rear (sorta like a break-open rifle, or a zip-gun), seal it in, poke the pin into the hole, and create a powder trail into the flash pan - this primes the pan and creates a path to the loaded powder, allowing you to use the flintlock normally. As for pi-0.5, that's what GURPS calls Pi- (Luke uses a houserule that expands the piercing classes, so it uses different abbreviations), as in it has a Wounding Multiplier of x0.5. For reload time, breechloading rifles canonically have a 10 second reload time, which is cut in half (to 5 seconds) by using a paper cartridge. However, that's using a paper cartridge normally. With a metallic cartridge, you'd also be looking at 5 seconds - one to open the breech, one to eject the spent cartridge, one to draw the ammo, one to insert it, and one to close the breech. Your mechanism sounds like it should take longer to open and close the breech, although I don't think it would take a full extra second for each. I'd say 1.5 seconds to open, 1 to draw your ammo, 1 to insert it, 1.5 to close the breech, 1 to use the needle to puncture the cartridge (priming the flash pan), and 1 to cock the lever, readying the weapon to fire. That's 7 seconds to reload - note there's no time needed to remove the cartridge (as it's been burned up).
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03-07-2021, 01:27 PM | #14 | |
Night Watchman
Join Date: Oct 2010
Location: Cambridge, UK
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Re: Plausibility check for mixed TL3/4+2 firearm
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03-07-2021, 03:48 PM | #15 |
Join Date: Mar 2021
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Re: Plausibility check for mixed TL3/4+2 firearm
Thanks again. Character creation and first session is tonight. I'm going to send my notes to the GM and bookmark this thread for him, for future reference.
Getting to the point where my PC can start hiring craftpeople to make all this will involve a lot of work. And all of this assumes that the characters survive long enough to get started on it. |
03-07-2021, 04:37 PM | #16 |
Join Date: Dec 2020
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Re: Plausibility check for mixed TL3/4+2 firearm
As far as I cremember therer was a gun like this in history, it added to all this a half screw at the end of the barrel, so with one 90 degree turn you can pull it out, half of the thread is filed down to make this possible. This speeded up the reloading time a bit, and was gas tight enough not to endanger the shooter.
Sorry for bad english I don´t know the technical term for this exactly |
03-08-2021, 04:41 AM | #17 |
Join Date: Mar 2008
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Re: Plausibility check for mixed TL3/4+2 firearm
S. M. Stirling in his Island in the Sea of Time had them use paper cartridges with a felt disk as the base. Helped seal the breech and when you pushed the next cartridge in the felt was fired on the tip of the bullet to sweep the barrel lower how fast the black powder fouled the barrel it
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03-08-2021, 05:32 AM | #18 | |
Join Date: Mar 2005
Location: Maitland, NSW, Australia
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Re: Plausibility check for mixed TL3/4+2 firearm
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03-08-2021, 05:50 AM | #19 | |
Join Date: Jan 2005
Location: Gothenburg, Sweden
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Re: Plausibility check for mixed TL3/4+2 firearm
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03-08-2021, 06:17 AM | #20 | |
Join Date: Mar 2006
Location: Iceland*
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Re: Plausibility check for mixed TL3/4+2 firearm
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guns, tech level |
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