Reddit reviews Air Combat At 20 Feet: Selected Missions From A Strafer Pilot'S Diary

The B-25s in these photos are field conversions to "Commerce Destroyer" (as General Kenney called them) gunships with 4 .50 machine guns in the nose, and an additional 4 .50s in package guns on either side of the fuselage (2 per side). They used low-level masthead/skip-bombing tactics to attack these ships. The basic idea was to suppress gunners with the .50s on approach to the ship, then drop bombs which skip across the water like skipping a rock, which impact the side of the ship. They also used these types of tactics against airfields and other ground targets, strafing and dropping (among other things) 23 lb parafrag bombs.

You can read more about this in books like this (free) or these (not free). I also highly recommend this memoir as one of the best POV books covering this theater.

you should go use your special reading skills and read some books about the use of the weapon systems you pretend that you understand.

Not only have been trained and used the m2 50cal IRL, ive also read many books about the exact subject we are discussing.

you are extremely ignorant, go fix it.
edit:
try this book, its a good read, and quite informative about bomber air defense vs single engine interceptors

https://www.amazon.com/Air-Combat-At-20-Feet/dp/1418477893/ref=sr_1_1?ie=UTF8&qid=1499381777&sr=8-1&keywords=air+combat+at+20+feet