Just a random thought. Since Primal Giratina is every type does, that mean the effects of the net ball are in effect, or is it just the original typing of the Pokémon?
Nope. Primal Giratina gets every type defensively. Which means net ball effects don’t apply
Heavy balls would be better anyway. They’d have higher catch rate cause primal Giratina is thicc
This also mean it doesn’t get STAB on every move, unlike Primal Arceus.