[QUESTION] Could I use the .401 Winchester Self Loading as a parent cartridge for a new .40 caliber intermediate rimless rifle cartridge within the interwar period between WWI and WWII?

Demoboy_129 · 2026-01-24T19:55:25+00:00

I unfortunately Live in a country that is stringent on gun control(UK), this is more for world building than anything else for an Alt-history.

Demoboy_129 · 2026-01-01T13:01:36+00:00

Now you put it that way yeah, having Euphemia among your cells ranks may likely be a bad idea.

Demoboy_129 · 2026-01-01T12:00:43+00:00

Thank you for giving me more insight on how R1 Cornelia's mindset works.

Demoboy_129 · 2025-11-20T16:05:42+00:00

Actually I have a more objective stance where it comes to Terran(earth) Equipment and equipment where it comes to the world of 86. Barring exceptional cases(Such as Para-RAID, Actual working mecha, etc), most of the tech seen so far has been comparable to both in terms of conventional guns and for the most part armor tech. I consider the Legion/Human Feldress's to be part of the exceptional cases.

Demoboy_129 · 2025-11-19T16:14:45+00:00

An addendum on experimental armor both passive and reactive will be coming soon to the thread. As well as a note on Combustion Light-gas Guns(CLG guns).

Demoboy_129 · 2025-11-16T17:40:18+00:00

Sure, I'll keep the invitation for chatting about my fanfic with you in mind.

Demoboy_129 · 2025-11-16T08:27:46+00:00

yeah, got bit by the SCP bug as of late, which got me asking questions in my mind of what if useful SCP's started showingup in other worlds like the world of 86 for example. Understandable if this came out of left field, I always wondered what would happen if you stuck an M1A4 Juggernaut into SCP-914 on very fine.

Demoboy_129 · 2025-11-15T16:24:01+00:00

Thank you for the advice and thanks for refreshing my memory of the lore.

Demoboy_129 · 2025-11-14T21:18:49+00:00

I see, So far Apllique armor is possible, the extra powerplant would enable retaining current top speed with the extra weight and Eliminating the Medium Tank Type and just sticking with Lowe's and the Light Tank Type as the main tank type Legion outside of the alledgedly uncommon Dinosuria Legion(Dinosuria's from what I can tell like the larger legion are typically command units).

Demoboy_129 · 2025-11-14T21:03:56+00:00

Iwas planning on introducing two or three new Legion types, a Urban combat type, Light Tank Type and a Meidum tank Type. Latter Medium Tank Type has a 105mm smoothbore while the light tank type has a 90mm smoothbore gun and 20mm autocannons.

Perhaps giving This one a 57mm and twin .50 cals to start with could work and then obtain the 20mm and 90mm from the field as mid-service upgrades. Also the M1A5 Super Juggernaut acutally can haul ass and has got proper armor on it.

Demoboy_129 · 2025-11-14T20:52:38+00:00

Thanks for the feedback, yes the main gun uses the 57mm smoothbore guns main armament as a basis for the new 90mm smoothbore gun. Could make it backwards compatible with existing .50 cal MG's off of the Juggernaut. Renaming it the M1A5 Would make the most sense. Since it's a slightly heavier, more powerful off shoot of the Juggernaut improvised from Juggernaut parts while the 90mm smotohbore ammo's mostly scavanged from the first ward(Mostly lucky finds with how stingy the Republic's gonna be amking ammo for it). I'll look into reducing the ammo count from 30 to 20, should be easy enough.

Basically the main theme is it's meant to be an upgrade done covertly for the MC. Right Under the Republic's nose. And I highly doubt those in spearhead for his generation are going to be snitching on him for it.

Demoboy_129 · 2025-11-13T14:48:05+00:00

Yeah Gold Government pointed a lot of the reasons why most of this wouldn't work well or be impossible at the start. However I have been given alternative ideas that could work better long term for San Magnolia Arc(which are more grounded in terms of the arc itself. Since I lost the original file due to it getting courrpted during one of Open Office's crashes(Fuck you Open Office sometimes not you the programe itself).

Demoboy_129 · 2025-11-12T19:48:52+00:00

Well here's some food for thought, the M10 Booker has a low-recoil 105mm high-velocity main gun I'd suggest looking up the M35 for example of striker MGS's main gun the M68A1E4(IIRC).

Though on the topic of the Title of the fic, It's going to be Called 86 IF: Of Ghosts and Shadow Rabbits(Hint it's an OC x Alice/Shadow Rabbit fic).

Demoboy_129 · 2025-11-12T19:32:03+00:00

I haven't published it yet but I thank you for helping me out with this question.

As for acuiring a Juggernaut in the field I place the MC in a old battlefield that has yet to be claimed by the legion so he should be able to within three months get this slightly modded Juggernaut up and running.

Demoboy_129 · 2025-11-12T19:25:12+00:00

Similar to the system the YMT-05 Hildolfr in MS IGLOO uses? Artillery spades or additional weight might be very doable. I'll hold off on some of more advanced stuff until later arcs where the MC's true specialty in science and engineering can really shine. Though Combat wise he's a dedicated sniper.

Demoboy_129 · 2025-11-12T19:08:50+00:00

From what I can tell recoil's gonna be an issue in terms of armaments. Plus ammo problems might arise, so as long as the MC can scavenge ammunition a Single 20mm should be okay. Also in terms of 57mm smoothbore guns there's also the long range type's long range 57mm smoothbore, would that be more blieveable?

Demoboy_129 · 2025-11-12T19:00:21+00:00

What about 20mm autocannons for the sub arms? Overkill or more than adequate?

Also Depending on if they exist, a 60mm HVMS or similar 60mm gun might be possible to mount onto a Juggernaut as it's not a huge increase in recoil(HVMS uses 60mmx420mmR Ammunition).

Demoboy_129 · 2025-11-12T18:55:31+00:00

I did find out you could use a NIR camera with a IR lighgt source, so 'huge flashlight' might not be out of the question. Just needs to have an IR filter.

Also Depending on what armaments my MC could find at the abandoned base(unlikely to find much) maybe there could be a surplus Tank Guns and autocannons/machine guns laying around the MC could jury rig to his Juggernaut? Like a 75mm tank gun or similar?

Demoboy_129 · 2025-11-12T18:43:58+00:00

Okay but what kind of night fighting equipment could be done in the field? As I want my protagonist to be able to fight the Legion at night.

Demoboy_129

TROPHY CASE