[Thermagnetic Shells] is way too broken on [Mag]'s 2.

[Mag]'s bubble creates a magnetic field which attracts bullets to its centre and groups enemies near it .
When bubble ends or detonated prematurely with augment, the bubble will do damage to all enemies within a radius with 50% damage falloff. This damage scales 100% with damage done to enemies within the bubble ( excluding critical shots).
Projectile weapons has another interaction with the bubble , they circle back and forth inside the bubble until they hit an enemy or several of them , depending on punchthrough stat. For this reason , modding for punchthrough almost quadruples the dps (which doesnt show on overframe dps calculator).
[Thermagnetic Shells] in this case will also add to the damage absorbed inside the bubble. Since this scales with enemy hp , its gonna be viable even on steel path.

So the strategy is easy: Drop the bubble on a group of enemies => Shoot 1 full magazine => Explode the bubble => Grofit!