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US Navy officers train in ordnance maintenance at Jacksonville, Florida, United States, Jul 12, 1944. In this case, they are installing a Browning M2 .50 caliber machine gun into the right wing of an F4U Corsair fighter.

Caption   US Navy officers train in ordnance maintenance at Jacksonville, Florida, United States, Jul 12, 1944. In this case, they are installing a Browning M2 .50 caliber machine gun into the right wing of an F4U Corsair fighter. ww2dbase
Source    ww2dbaseUnited States National Archives
Identification Code   80-G-282101
More on...   
F4U Corsair   Main article  Photos  
Browning M2   Main article  Photos  
Photos on Same Day 12 Jul 1944
Photos at Same Place Jacksonville, Florida, United States
Added By David Stubblebine
Added Date 24 Nov 2013

This photograph has been scaled down; full resolution photograph is available here (1,024 by 813 pixels).

Licensing  Public Domain. According to the US National Archives, as of 21 Jul 2010:
The vast majority of the digital images in the Archival Research Catalog (ARC) are in the public domain. Therefore, no written permission is required to use them. We would appreciate your crediting the National Archives and Records Administration as the original source. For the few images that remain copyrighted, please read the instructions noted in the "Access Restrictions" field of each ARC record.... In general, all government records are in the public domain and may be freely used.... Additionally, according to the United States copyright law (United States Code, Title 17, Chapter 1, Section 105), in part, "[c]opyright protection under this title is not available for any work of the United States Government".

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Visitor Submitted Comments

1. Commenter identity confirmed Bill says:
20 Dec 2015 04:58:59 PM


Clean those fifties from the pilots who flew the F4U, to the ground crews everybody learned how to field strip and service those weapons even the feed systems needed maintenance ammo wiped down and cleaned.
Some pilots liked tracer ammo loaded along with ball ammo while others wanted ball ammo loaded
with a couple of tracers, this would tell the pilot he had 50 to 100 rounds left per gun.


The firing time for those 6 x .50's was (30) seconds, pilots fired short bursts against a target.
the fifty caliber was reliable, and could carry a lot of ammo, the round had high muzzle velocity and flatter trajectory and was very effective in deflection shooting this means firing just a head so the target runs into a lot of lead.

Rate of fire was 10 to 12 rounds per second, so a one second burst from 6 x.50's could put out 60 to 72 rounds that's a lot of lead. The .50 caliber is used when you want to reach out and touch somebody....during WWII US Industry produced over 2,000,000 fifty caliber machine guns, this doesn't count spare parts, the weapon is still in production today.

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Modern Day Location
WW2-Era Place Name Jacksonville, Florida, United States
Lat/Long 30.2358, -81.6806
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