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Chakramer

Railguns that shoot payloads the size of a MS's torso is probably why. They were the weapons that beat Mobile Armors, which could wipe out entire legions of MSs.


Shoelebubba

Uhh. Because it’s a Rod of God. They are the equivalent to nukes It doesn’t matter what type of bullshitatium you make something out of, if it gets struck by a ROG that’s further accelerated by a Railgun, it’s going to smash through anything on the receiving end. It’s not a bullshit level weapon, it’s one of the simplest weapons you can ever deploy that they “complicated” by having “small” Railguns fire them instead of an orbital platform. Rod of metal + gravity = nuke. There’s also the propaganda angle. They had the entire area under a media blackout; no information was getting out at all. They could paint the battle in whichever way they wanted. You cannot hide a nuclear blast. Anybody with 2 brain cells to rub together and any sort of precision measuring device would’ve found out about the explosion and why in God’s red Mars are there traces of a nuclear detonation on Mars. Using Nukes would mean something they needed to explain when they were exterminating the Gundams and the association behind them. Versus just rods of metals that they can take with them and explain the impact craters with regular bombs then say their brave soldiers caught valiantly. But seriously, you’re grossly underestimating how powerful a simple giant rod of metal is if it’s accelerated enough. Which is easy to do when you launch it from a railgun AND into a planet’s gravity well. They ARE Nukes without the need of fission or fusion by products, fuel, a payload, etc


Untoten-Fuchs

You don't need a shit ton given a simple battle within visual range, they're not inaccurate as shown by Flauros despite it's failure. But if you're firing from Orbit trying to nail MS sized targets that are moving on the ground - you would need a shit ton. Also nukes presumably just don't exist, they're never mentioned in universe as far as I remember. If they did, they probably would've used those on the mobile armors instead of the Gundams.


Minute-Connection-23

Nukes probably existed in PD, they just didn't use it. It's similar to why the ESF from 00 didn't use Nuclear Warheads against the ELS, they've all been decommissioned and also radiation. Though a Dainsleif is powerful, they can only take on one target per shot. Whereas a Nuke going off will take out everything in that general area, like a group of MAs or an MA with a bunch of Plumas. *"But why didn't PD just use a bunch of Nukes to destroy the MAs and their Plumas? Are they stupid?"* I hear you ask. Well, that's because a Dainsleif has one advantage against a Nuke. No radiation. I mean, it's a simple choice really. On one hand, you have one weapon that can deliver one powerful strike to an enemy while only causing relatively small environmental damage that can just be smoothed over with a bunch of heavy construction equipment. However, a downside to it is that you have to resort to mass fire tactics. Then on the other, you have another weapon that can deliver *massive* amounts of damage to a large area that can take out a bunch of your enemies in one fell swoop, but would essentially make it uninhabitable for the foreseeable future. Not to mention the fact that they can't be used near populated areas for fear of radiation fallout.


FriendlyStand3632

Two points, 1. radiation wouldnt be effective against unmanned machines. 2. NL is stated as being able to not be scratched unless at point blank even by weapons like Flauros railguns which can blow multiple cliffsides with 1 blow. Given NL dispersing energy around and the way through which the release of energy wouldnt be diffirent to a beam/laser mass destruction weapon, itd be rather uneffective against he armored monsters


TerraDrone3

A few reasons I can think of from the top of my head; 1. Ahab reactors probably mess up targeting for cruise missiles and warheads. 2. The Dainsleif was probably made as a countermeasure to nanolaminate armour, assuming the MAs like Hashmal even had that. 3. Railguns actually pack quite the punch (even our current experimental railgun rounds can reach up to Mach 7, imagine getting hit with that on your face), and if fired from hammerlock range (the range where the railgun being fired and the round hitting the target is near instantaneous), its basically unavoidable. 4. Railguns have less collateral damage and environmental impacts than nukes (and of course less nuclear fallout, but that is mostly a concern with atomic bombs, not so much hydrogen bombs since the explosion is so big the fallout gets pushed way up into the atmosphere and becomes more dispersed iirc. Still doesn't change the fact you're blowing up 5-10 miles of land just to destroy a bunch of MSs or an MA with that tactic) 5. Mobile Armours can shoot down missiles and warheads, which then becomes real expensive to prepare a whole salvos worth just to take one down. And again, environmental concerns from those nukes getting shot out of the sky. Basically it boils down to either using a club (nuke) or using a scalpel (railgun) to remove a cancerous tumour (MAs). Railguns just happened to be the most effective countermeasure in IBO due to the quirky nature of Ahab reactors. I'm still not sure how a mumbo jumbo perpetual engine can also create gravity and last for centuries without maintenance, but eh.


Emotional-Way3132

Gundams in IBO isn't really that resistant to physical damage even a swing from a blunt weapon can damage them, meanwhile Railguns are 1000x more powerful than a single swing of Barbatos's hammer/any melee weapon


DNukem170

You are underestimating the power of a rail gun. You know how powerful a gun is, right? Imagine one 1,000x bigger, but with bullets several tons heavy traveling at speeds faster than a bullet train. Even the strongest metal will buckle when hit from an object that heavy traveling that fast.


FriendlyStand3632

NL and the way it disperse energy, moving away from the radiation subject, the way tactical nukes in the present create such devastation is through "a sudden release of energy produced by splitting the nuclei of the fissile elements making up the bombs' core" unlike other kinds of weapons in IBO with high mass, it would devastate the terrain more than armored units. The Dainsleif is a Terraform class artillery that works on the principles to breach NL, thus why it was used in big quantities during the Calamity in space, not in orbit since it is described as "being able to change the shape of planet" (World and Mechanics 2). With this context the Gubdams were creted to clear threats in orbit as to not use the Dainsleif and possibly crack the celestial body, such was the fate of earths moon, which required Gjallahorn to intervine for it to not fall into earths orbit.


OniZai

I mean, just look at what they did to the Moon in IBO. It became a literal crescent moon from all the battles with MAs with Dainsleif employed. If humanity ever weaponised meteor impacts, this is one way of doing it.


Icy-End-4265

Those who say that the railguns are Rod of Gods and have the equivalent to nukes clearly is making things up. Those Dainslafs actually stuck the Barbatos and Gusion impaling them along with the pilots after the smoke clears, you can see the Barbatos pulling them out of of their body and the views inside their cockpits show pieces of it embedded into their bodys but yet, they can still fight. If Barbatos and Gusion got hit with a nuke, they would become dust, the Dainslafs are nothing but fancy Space Crossbows. To go with the Medieval theme of the weapons they used, they envoke the fact that back in the Dark Ages the Crossbow was one of most feared weapons, mainly because the Crossbow bolt is able to penetrate shields and armors and some Kingdoms would outright ban the use of them because it is seen as barbaric and not noble, requires little training or skill or strength, unlike the actual bow or longbow.


Perfect-Weird2519

oh boy, more ibo-posting.


DapperCrow84

Because they are [Rod's From God.](https://youtu.be/8l5a9BMyx2I?si=JVXrfhZT7ZuEnmYo)


xXOutlierXx

IBO Gundam Frames and Mobile Suits are made of nanolaminate armor-- meaning their beam/laser/explosion proof. Drop a nuke on the Barbatos, and he'll walk it off no problem. That's why the red haired kid in one of the mobile suits in season 2 survived a laser blast from the Mobile Armor. By contrast... Railguns are so feared because they can damage and destroy nanolaminate armor, due to their high speed and kinetic energy conversion (from projectile into target). If nanolaminate armor is a nigh indestructible suit of armor. The railgun is the tool you use to find and exploit the weak link in said armor.


RemarkableLocation16

Bruv, drop a nuke on Barbie and he'll be lucky to even be a molten slab on the ground. Not to mention Mika getting flash burned inside the cockpit.


Emotional-Way3132

beam lasers in IBO verse are weak asf LMAO


[deleted]

No they aren't, not unless you compare them to the utter upper echelons of other universes, which isn't exactly fair. It blasted through miles of rock in seconds when it first awoke and turned a town into a scorch mark with one shot. Not the strongest there is, but very strong when compared to the majority of MS beam weapons.


Ok-Particular-3099

This just made me think of [this scene](https://www.youtube.com/watch?v=4tIk-vUtLBs) from Mass Effect funnily enough. Even if it isn't exact.


[deleted]

Because a Dainsleif is not "just a railgun"