A fully armed F6F-5 Hellcat can destroy a SB with its 2x 1000lb bombs, it's 6 rockets and machine guns.
Do the math on that and you will see just how much of the .50 cal ammo has to be used.
the 5in rockets have 156 lbs of dmg each (X6). So roughly 936 lbs of damage from the rockets, 2000 lbs of damage from the 2X 1k bombs,... so that makes for just shy of 3000 lbs of damage from ordnance alone. To make up that 1000 lbs at least 4 passes is going to be needed and most likely 5 or 6 passes. Lots of long drawn out bursts, for sure. But it certainly can be done.
The F4U-C variant is a good "go to" navy plane for use against the SB. Same ordnance load but over 4X the damage available in the quad 20mm's.