Based on above video, I noticed that 10 mag does not refill 2 ammo on Igneous Hammer kill with subsistence. Is this intentional? Keep seeing people said that subsistence refund 20% of the mag. Not gonna lie, the documentation of this perk is quite poor. But serious, say it's not 20% of the mag aka 11 mag is required to refund 2 ammo, then what's the math? 18.1818% ammo being refilled instead of 20%?