VX-99 Hybrid Antimatter Blaster now can use 2 type of ammo.

Antimatter Slug:The standard ammo for the VX-99.Very high damage and speed,small radius.

Neutron Shockwave Slug:Very high speed,medium damage,very large area of effect,insane kickback from the impact.

In order to use specific ammo you need to load the VX-99 with the ammo that you want to shoot.
Things to know:Load only 1 type of ammo,dont have both inside VX-99.You need to be in Survival mode in order to use specific ammo,otherwise it use only Antimatter,so spawn your items in creative and swap it to survival to test it.

Science fiction behind Neutron Shockwave slug:As you noticed,Unoctquadium 184 its a very heavy element.That projectile uses extremely compressed amount of that element (projectile weight is 3000 tons) combined with high speed,so when it hits a target the impact creates a shockwave,that kicksback the target and everything nearby it,causing also a medium damage in a large radius.

Enjoy!