This mod affects only the autocannon tank by making it more fun to use and with a tiny bit more utility so that you might want to use it more often and produce more ammunition for it than simply switching to the battlecannon version. There's no 25mm autocannon tank with better accuracy than the armored car so this kinda gets halfway there. There's new explosions and new sounds (which affect entries 749 and 750, check for compatibility).
The cannon has a blast radius of 1 and ignores armor direction but has slightly better armor penetration to compensate, the adjacent tiles take damage on par with a grenade (55/68 depending on AP or HVAP). Also does 50-150% range. It still causes piercing damage type. Overall looks/feels pretty impressive.
One benefit is you can potentially blow a 2-3 tile wide hole in a wall or fence, and you can shoot the ground near a soldier (ie, guild security or marsec operative) and it may only wound/kill them instead of y'know blowing them to pieces. The hvap shells should also cleanly blow holes in ship hull each time (101.5 dmg vs terrain).
Inspired primarily by having the shell be a shaped charge warhead so it does some radial damage due to that much force being released, the look of the autocannon shells suggests moderately low velocity similar to an upscaled "light cannon".
This was parceled off of the primary consolidated mod I play with.