Certain supes should not take any damage from guns let alone a 9M pistol for example the deep. most superheroes also have a durability that atleast protects them against bullets. Obviously certain supes have a higher durability than other supes.

What I recommend doing is ad a durability slider in the powerpack framework. all from slightly more durable to homelander + level durability and strength. for example bullets should damage kimiko but she should be able to regen. while the deep. A train and many more should be invulnerable.