SCP-044

"The French civilians we encountered called it the Tarask. I don't know enough French to know what that means. I like to think it means "the work of Satan himself," because that's the only one who could have made that fucking thing."

Summary
SCP-044 is a howitzer, secretly manufactured in the late stages of the Second World War by Krupp engineers, personally supervised by Albert Speer, German Minister of Armaments and War Production under Adolf Hitler. SCP-044 is unique not only because of its size (251,000 kg, or 251 metric tons), but also because it fires unconventional artillery using an atypical delivery method. Rather than having a breech for loading shells, the rear of the barrel is configured into a massive air-compression chamber. Any object or pile of objects that fits may be loaded into SCP-044’s muzzle to be used as ammunition. Because of its size, SCP-044 must remain rail-mounted and requires two freight locomotives to move. When SCP-044 is fired, all matter within its barrel is ejected at a high rate of speed as a glowing red slug, proportional in size to the amount of mass loaded into the muzzle. Upon striking a solid object or the ground, the slug explodes with a yield proportional to the mass of the original ammunition, at no less than a 100% mass-to-energy conversion rate. The yield will also increase somewhat the longer the slug remains in the barrel.

Powers and Stats
Tier: Varies, up to at least High 6-C

Wielders: SCP Foundation, Formerly Nazi Germany

Powers and Abilities: Matter Manipulation, Explosion Manipulation

Attack Potency: Varies (The yield of the explosion created is entirely dependent on what is being used as ammunition), up to at least Large Island level (Used a 8,900 kg pickup truck as ammo, which produced a slug that created an explosion with an energy output of 191 gigatons of TNT or 8e+20 joules at 100% mass-to-energy conversion rate)

Speed: Sub-Human (SCP-044 is immobile on its own, so it must remain rail-mounted and requires two freight locomotives to move)

Durability: Unknown

Range: Dozens of kilometers

Weaknesses: Low mobility