Editing Imperial Ordnance (section)

== {{anchor|Baneblade}} Super-Heavy Tank Guns ==

Technically, these guns can be carried and fired by a vehicle in direct combat, but because that vehicle has to be the size of a [[Baneblade]], they deserve a category of their own.

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===Accelerator Cannon===
[[File:Fellblade_Cannon.jpg|200px|right|thumb|Accelerator Cannon]]
The main gun of the [[Fellblade]]. It fired armor-piercing explosive ''self-guided'' "darts" via either magnetic acceleration or gravity impellers. It was also twin-linked, though the Fellblade had severely limited ammunition for it, relying mostly on its other weapons until a suitable target presented itself.

This type of cannon used a complex overpressure mechanisms of a special vacuum-based system which can propel heavy shells with greater force than a conventional cannon of similar size. This system is so efficient that they provide very little recoil from every shot, making the Accelerator cannon extremely stable and accurate. The loading mechanism of Accelerator cannon is also highly advanced and served by a special loading mechanism that allows the tank’s commander to switch ammunition type at a little notice.

It was made on the [[Forge World]] of Tigrus (home of the original Vanquisher cannon -- which resembles the Accelerator Cannon quite closely, with the long barrel and large muzzle brake). It can fire high-explosive shells comparable to a super-charged Battle Cannon (S8 AP3 7" Blast) or armor-piercing shells comparable to what would later become the Vanquisher battle cannon (S9 AP2 3" Blast, rolling 2d6 for armor penetration).

Its smaller brother is the [[Accelerator Autocannon]].

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===Macro-Accelerator Cannon===
[[File:MacAccelerator_Cannon.jpg|200px|right|thumb|Macro-Accelerator Cannon]]
Think of the Accelerator Autocannon on steroids. The Macro-Accelerator Cannon is to the Accelerator Cannon in the same way the Accelerator Cannon is to the Accelerator Autocannon (Try and speak that sentence five times in a row).

The Macro-Accelerator Cannon is a large kinetic weapon used by the Primaris Space Marines' [[Astraeus Super-Heavy Tank|Astraeus Super-Heavy Grav Tank]] as its primary armament. The Macro-Accelerator Cannon is actually a complex mass driver that uses a potent electromagnetic field to accelerate a barrage of high caliber ferro-carbide slugs to extremely high speeds. It is basically an upscaled Imperial railgun. Usually twin-linked, these weapons unleash an onslaught against which even enemy heavy armor cannot stand.
Note: Mass Driver is used in the wrong context here. Unless they intend to say the Macro-Accelerator Cannon are miniaturized versions. That can be used as Railguns. But Games Workshop writers don't proofread their shit anyways.

Crunchwise, the fluff seem to match the rules. The Macro-Accelerator Cannon is a vicious Heavy 12, S8, AP-2, Damage 3 that ignores all abilities that impose negative hit modifiers when targeting anything with the FLY keyword. Normal vehicles wouldn't even survive a barrage of these and superheavies would take a beating.

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===Stormhammer Cannon===
[[File:Stormhammer_Cannon.PNG|200px|right|thumb|Stormhammer Cannon]]
The slightly weaker sister of the Baneblade Cannon.

The Stormhammer Cannon is a massive Ordnance Weapon that serves as the most powerful armament of the [[Stormhammer]] Super-Heavy Tank of the Imperium. Alongside its [[Rape|twin-linked, hull-mounted Battle Cannons]], they form the primary armament of this tank; easily spelling doom for the vast majority of TEQs and tanks. Because of the addition of what is effectively ''three'' MBT cannons, space suddenly becomes a premium. The Stormhammer Cannon, therefore, has a smaller bore size than the Banblade Cannon; firing smaller, weaker shells in exchange for a much higher fire rate.

Crunchwise, it follows the fluff pretty closely as it is overall, weaker than the Baneblade Cannon, being a 60", heavy 2d3, S9, AP-3, D2d3, blast weapon. While you won't be reliably blowing chunks off other superheavies like the Baneblade, you are compensated by having three long-range tank guns that can delete ''swarms'' of armoured vehicles short of superheavies in a single barrage.

===Baneblade Cannon===
[[File:Banebladecannon.jpg|200px|right|thumb|Baneblade Cannon]]
The [[Baneblade]]'s primary cannon is an upscaled Battle Cannon, improved in strength, armor penetration, and blast radius (S9 AP2 10" blast = 10" wide [[lascannon]] pie-plate). Its special shells are not propelled by an explosion, but are rather miniature rockets that increases the shell's range and accuracy tremendously. However, this also leads to the danger of a build-up of gasses in the barrel, which can cause serious harm. To combat this the Baneblade Cannon is built with a double-sleeve design with venting ports studded around the cannon's muzzle, allowing these gasses to escape under their own pressure.

When fired the shell leaves the barrel under its own blast pressure with speed maintained whilst the rocket burns, with each booster burning out and falling away as the next one ignites. This means that the Baneblade's Cannon works on a similiar basis to a upscaled Bolter -- a feature that "counterfeit" Baneblades produced on other [[Forge World]]s are unable to reproduce, and so they substitute standard battle cannon rounds for them. There's no indication that they're much, if at all, different, though.

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===Dreadhammer Cannon===
[[File:Dreadhammer.jpg|200px|right|thumb|Dreadhammer Cannon]]
Back in the [[Great Crusade]], [[Perturabo]] asked the [[Adeptus Mechanicus]] to build him a new cannon that could level buildings with a single shell and be carried at a reasonable speed. Because the [[Horus Heresy]] hadn't happened yet, and they were thus still feeling like innovating now and then, the tech-priests agreed, and built him the Dreadhammer.

It fires shells that weigh several tons, and experiences so much recoil that even the super-heavy [[Typhon Heavy Siege Tank]] has to limit the propellant used (and thus the range) if it wants to fire on the move. At first, people made fun of Perturabo for asking for (and getting) a super-Demolisher, but it has a bigger blast radius and, if the Typhon stays still, a longer range, and it really does shake buildings to their foundations. The appearance, name, and firepower of the Dreadhammer cannon suggest some connection with the [[Baneblade]]-mounted [[#Hellhammer Cannon|Hellhammer cannon]].

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===Hellhammer Cannon===
[[File:Hellhammer_cannon.jpg|200px|right|thumb|Hellhammer Cannon]]
The comically small Hellhammer Cannon is the main weapon of the [[Hellhammer]] tank. Resembling a Baneblade with [[Lulz|micropenis issues]], this gun has spawned numerous compensation jokes at the tank's expense. Still, every nerd has its day and one thing the Hellhammer excels at is in its ability to fire [[Fallout|mini-nukes.]]

The Hellhammer Cannon fires shells with a building-busting sub-atomic charge (like the Eradicator Nova Cannon). Each shell weighs 180 kilograms and is propelled by a rocket motor, with exhaust vents on either side of the barrel allowing for the safe discharge of gas with every firing. Due to the sheer weight of the shells, an automatic loading tray assists the loader, limiting the weapon's rate of fire. The tremendous concussive explosion (S10 AP1 7" Blast) is enough to collapse a building in one shot (Ignores Cover), so crews are trained to fire at the ground floors of structures that need to come down. The short barrel and recoil compensators give the cannon a very short range (a measly 36"). As such, the Hellhammer cannon is only used on tanks that are built for urban combat, like the [[Hellhammer]] super-heavy tank.

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===Quake Cannon===
[[File:Quake Cannon.jpg|200px|right|thumb|Quake Cannon]]
''For additional information, see here: [[Autogun#Quake Cannon|Quake Cannon]]''

What has already been said about the Quake Cannon in the Autogun category has been said here. The Quake Cannon is an [[Awesome]] gun with a [[Stupid]] construction process. The quintessential fortress fucker supreme.

The Quake Cannon is an odd beast; its firepower is not unusual for a weapon of its size (S9 AP3 10" Blast), but it has a longer range than any other tank gun (180", only exceeded by the Earthshaker and Colossus cannons), and is normally an arm weapon for [[Warlord Battle Titan]]s.

It is occasionally mounted on a Baneblade chassis to make the [[Banesword]], essentially a super-heavy self-propelled artillery piece, primarily employed against fortifications. Also, it's ammunition is filled with the echoing shockwave of a world that was subjected to [[Exterminatus]], [[Awesome|and the sound it makes as it flies through the air is said to be the screams of those who died in the exterminatus that powered it.]]

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=== Stormsword Siege Cannon ===
[[File:Stormsword_Cannon.jpg|200px|right|thumb|Stormsword Siege Cannon]]
The Stormsword Siege Cannon fires big bunker-busting rocket-propelled shells. Unfortunately, the [[Adeptus Mechanicus]] never considered that crews might want to fire at things other than ground floors of nearby buildings, so the cannon cannot elevate very far (though, if it did elevate too far, the recoil might just rip it out of the turret). It makes up for this by being able to turn entire city blocks to dust with a single shot.

The weapon and vehicle itself is built specifically for sieges and street-fighting, the Stormsword is geared towards providing troops close-quarter support with a variety of heavy weapons whilst its cannon is used to lay waste to entire encamped bunkers and buildings.

It used to be that the [[Stormsword]] just had a Hellhammer Cannon that couldn't swivel, but apparently that made them too similar, so in the sixth-edition version of [[Apocalypse]], GW made the Hellhammer Cannon a 7" blast and left the Stormsword with the 10" pie-plate.

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===Tremor Cannon===
[[File:Tremor_Cannon.jpg|200px|right|thumb|Tremor Cannon]]
Most cannons launch shells that are fuzed to explode on or shortly before impact. Not the [[Banehammer]]'s Tremor Cannon: after landing it buries into the ground before it detonates. This muffles the blast (S8 AP3 is actually the lowest-strength and worst AP of all the super-heavy tank guns), but it sends a tremendous shockwave through the earth that leaves enemies not caught in the blast stumbling and slowed. The fluff describes this as ''liquifying'' the surrounding terrain.

Imagine the ground under your feet giving way, suddenly having the consistency of water. By the time you've figured out what's happened, you're partially buried in the dirt and have to dig yourself out before the enemy comes and shoots you like a horse with a broken leg. And that's if you're lucky, it's entirely possible to get buried completely and suffocate to death under several feet of earth and rubble. You can see why it would be very, very bad to be on the receiving end of this weapon.

In theory it would also make a decent wall and bunker cracker.