Gunlancer design idea part 3:
Burst Window
- Wyrmstake, a GCD at 120s cooldown that deals an initial hit and inflicts the "Wyrmstake" debuff to the target. While in effect, ammo damage is increased and an additional explosion effect occurs on the target. Ammo potency dealt to target (not regular attacks) is compiled during the effect, and again inflicted at the end of the window.

- Heated Reload at 60s cooldown grants an additional row of 5 ammo that auto Direct Crits and is consumed before regular ammo.
Burst fire can only use 1 ammo type at a time, but you can consume all 5 heated ammo with it.

- On a shared cooldown with the Wyrmstake would be Wyvernfire Cannon, a cone AoE upfront nuke (maybe a trait can upgrade it to increase shot damage for a while after the initial hit, for parity with ST)