New Destiny (LoL)

Information
Graves' basic attacks consume ammunition for 2 shells. He will reload over a few seconds after expending all shells or withholding leftover shells for a while, with the time being reduced by Graves' level and bonus attack speed.

A shell sprays 4 pellets in a cone, one dealing 70% − 100% (based on level) AD physical damage plus a third of the damage for each pellet beyond the first, up to a maximum of 140% − 200% (based on level) AD physical damage. Pellets deal 25% reduced damage against turrets.

Critical strikes spray 6 pellets over a 50% wider cone with each one dealing (40% + 10%) bonus physical damage.

Pellets collide into the first enemy unit or structure they hit. Non-champion units hit by more than one pellet are knocked back. Each pellet applies on-hit effects, but enemies are affected by them once per shell.

Source

 * 1) Graves (League of Legends Fandom)