It's interesting to dig deeper into the vague mention of "special ammunition". According to [1], the Slinger uses Northup Grumman's M230LF Bushmaster 30mm cann

It's interesting to dig deeper into the vague mention of "special ammunition". According to [1], the Slinger uses Northup Grumman's M230LF Bushmaster 30mm cannon and [2] suggests that the anti-drone ammunition is the recently developed XM1211 HEP (High Explosive Proximity) round which was designed for the M230LF. Finding about the creation of XM1211 rounds is stunning because it means that an effective radar proximity fuse is being stuffed into a tiny 30 mm diameter projectile with enough room left over for adequate explosive to generate a cloud of shrapnel. That's stuff that would have been considered sci-fi a few decades ago. [1] https://www.australiandefence.com.au/defence/land/more-on-eos-new-counter-uas-weapon-system https://www.australiandefence.com.au/defence/land/more-on-eo... [2] https://taskandpurpose.com/tech-tactics/army-xm1211-high-explosive-proximity-round-fielding/ https://taskandpurpose.com/tech-tactics/army-xm1211-high-exp...