I am curious.. How much of all this weaponry can the F-35 carry at once? Also, I thought it would have more 50 cal. bullets than that, considering how fast they are used up.
They aren't .50s.
Those are 25 mm shells. The USAF F-35A CTOL has an internal gun and carries 180 rounds. The USN and USMC variants have an external gun pod which carries 225 rounds. Software is used to fire the gun, which is the problem they are having now.
By comparison, the F-16 has a M61 20mm cannon that carries 511 rounds. The F-15, 500 rounds; F-18, 578; F-22, 480. The A-10 carries 511 30mm shells.
The F-14 carried 675 20mm shells. The F-4E, 639. Earlier F-4's carried the SUU-23/A gun pod with 1200 20mm rounds.
In WWII, the P-51 Mustang carried 1880 .50 cal rounds shared among 6 Browning M2 machine guns.