[Chainmail]

The M-777 is not an antiaircraft weapon. It is a 155mm artillery weapon that fires 96 pound projectiles to 22 kilometers with conventional ammunition and to 34 kilometers with base bleed projectiles. It loads one round at a time and has a max rate of fire somewhere around 3-4 rounds per minute.

Not at all suited for shooting planes down.

[17th Miss Regt]

They probably erred in calling it that. The gun appears to be a modernized Bofors 40 mm AA gun. That makes sense given the stated 3,500 m range and the high rate of fire.

[allendale]

Always wondered why 155mm artillery are not equipped with “shot gun” shells that can be radar directed aimed, positioned and fired at aircraft up to twelve miles away. Also why weren’t the big guns on battleships equipped with such shells to aid in anti aircraft defense. The Yamato was sunk with multiple hits by aircraft who were teeing off on the ship with almost no effective AA to disrupt them. If those big 18 inch guns fired “shot gun” shells at their attackers, suspect the attacks would have been less effective. Shot gun shells may also be last line of defense for surface combatants facing incoming missiles or drones.