https://www.macross2.net/m3/macrosstechman/tech-gunpod.html

TL;DR the alien tech makes the gunpods capable of firing rounds at almost railgun-like velocity so lower estimates for the 55mm gunpod round put it at maybe 24 times the amount of energy as the real life 30mm round from the A-10' gatling cannon

for comparison an M1 tank gun M829 sabot round is around 13 megajoules of energy, compared to the theoretical 4.8 megajoules for each 55mm gunpod round

>>23376978
>>23377027
only later model VF gunpods get a reload feature, definitely not for the VF-1 gunpod