No no, “accuracy for city-size targets”

HANS, A PLATOON OF FRENCH FIVE BERLINS TO THE EAST OF CURRENT TARGET

A large city the size of a small city.

with that kind of accuracy, it won’t hit anything, which leaves one option - increase in firepower. Fortunately physics allows for construction of nuclear device that fits in 203mm shell, let alone 238mm which was this thing

(i’m sure whoever came up with AIR-2 Genie also would like idea of nuclear anti-air artillery)

(technically it’s even nuclear SPAAG even if it needs rails)

Used in WW1, a one of a kind gun (although it had different barrels installed during its life). It was designed for psychological rather than practical reasons. The payload of 211mm or later 238mm shells sound big, but their effect compared to the cost and effort of firing them wasn’t practically worthwhile.

most lately construction of similar kind of gun was attempted under Saddam “▇▅▆▇▆▅▅█” Hussein as Project Babylon. it didn’t work because required high pressure pipes were intercepted and head engineer was assassinated

this was done by the same guy who, at first try, wanted to send satellites to orbit using a giant gun, as DoD Project HARP. it also didn’t work, but at least it was useful for atmospheric physics research