Comments by "" (@TheArklyte) on "T249 'Vigilante' Self Propelled Anti-Aircraft Vehicle | ROTARY CANNON FIREPOWER" video.

Vigilante and Sergeant York combined seem to have had a potential to make a good denial weapon for close range AA role. Not to mention allow troops on march to have their own land based CIWS decades earlier.
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@Limescale12 yes and no. Not by "any pew pew" by a long shot. There's a reason calibers below 30mm didn't last long in the role of SPAAG on neither side of the Cold War. They just lacked the firepower needed for the role even if volume of fire was great. 20-23mm didn't cut it(even if Phalanx and VADS have it). And they needed a direct hit too. Even nowadays they need. While it's easy to have programmable ammo at 30-35mm and even at 25mm nowadays. But Sergeant York(SY from here) lowered VT fuzes to 40mm caliber. It was a real breakthrough of the time. Sadly that system itself lacked volume of fire required. Meanwhile Vigilante has less widespread caliber and unique chassis working againt its introduction. Vigilante should have had reworked to 40mm as its technical design requirement and they should have used tank chassis as SY did. Rotary cannon volume of fire combined with 40mm VT fuzed ammunition... and ability to use all other "off the shelf" 40mm ammunition made by Bofors. Including APDS with high enough penetration to ruin the day of some tanks.
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