"What we're talking about here is muzzle velocity. Due to the short barrels in the wings the ammunition cannot obtain full powder burn. So, your .50's and other "rifle" cartridges are only getting from 500 to 800 foot pounds. Most pistol cartridges achieve up to 1100 so, you can see where distance, accuracy and power is greatly reduced. When you use these calibers with proper barrel length you'll acheive the 2000+ you'd expect from them. This is partly why cannons became a must. Not because their ballistics where any better(only slightly, 1300 to 1800)"
"The comparison is the foot pounds.
the .50 and other "rifle" caliber MG's were only hitting 500 to 800 and an average pistol cartridge can hit upto a 1100. No comparison just using an example of muzzle velocity. "
Balsur,
I guess those WWII armorers should have just stripped the machine guns out of the wings and put Model 1911 Colts in!
I don't where you get this stuff, but you are off by a mile! To say that a WWII Aircraft machine gun has less energy than a pistol is so far off the mark as to make anything else you say suspect.
Get your facts straight before you post such a ridiculous statement.
Example, my favorite pistol round is the .45acp. :
From
http://www.federalcartridge.com MV is Muzzle Velocity, ME is Muzzle Energy
230 Gr. JHP Hydrashock 850 MV fps / 369 ME Ft-lbs
185 Gr. JHP 950 MV fps / 371 ME Ft-lbs
230 Gr. FMJ 835 MV fps / 356 ME Ft-lbs
185 Gr. JHP+P Hydrashock 1140 MV fps / 534 ME Ft-lbs
The site you put the incorrect link to is probably:
http://www.geocities.com/CapeCanaveral/Hangar/8217/fgun/fgun-pe.html The 50 cal M2:Browning .50 M2 Bullet Weight: 43.3Gr. That is in Grams, not Grains. 43.3 Grams is 1.6 ounces!
Pistol bullets are listed in Grains, Machine Guns in Grams.
In other words the .45 acp 185 gr. weighs only 11.99 Grams.
50 cal M2 Muzzle Velocity is 880 Meters/sec
NOTE: That is Meters per second, NOT feet per second!!!!
The WWII M2 .50 cal machine gun had a bullet weight 3.6 times higher and travelled 3.1 times faster than a pistol.
If you had ever fired a pistol or a machine gun you would have known intuitively how ridiculous your opening statement was.