To: TheThirdRuffian
Goddard amply proves the fallacy of "knock-down power" by calculating the heights (and resultant velocities) from which a one pound weight and a ten pound weight must be dropped to equal the momentum of 9mm and .45ACP projectiles at muzzle velocities, respectively. The results are revealing. In order to equal the impact of a 9mm bullet at its muzzle velocity, a one pound weight must be dropped from a height of 5.96 feet, achieving a velocity of 19.6 fps. To equal the impact of a .45ACP bullet, the one pound weight needs a velocity of 27.1 fps and must be dropped from a height of 11.4 feet. A ten pound weight equals the impact of a 9mm bullet when dropped from a height of 0.72 inches (velocity attained is 1.96 fps), and equals the impact of a .45 when dropped from 1.37 inches (achieving a velocity of 2.71 fps). Although I carry a 9, I have a hard time believing that it beats a 45 with good ammo.
12 posted on
07/26/2011 4:55:09 PM PDT by
50cal Smokepole
(Effective gun control involves effective recoil management)
To: 50cal Smokepole
The .45 makes a bigger permanent hole and has better penetration, both of which are important.
13 posted on
07/26/2011 4:58:04 PM PDT by
TheThirdRuffian
(Nothing to see here. Move along.)
To: 50cal Smokepole
Goddard amply proves the fallacy of "knock-down power" by calculating the heights (and resultant velocities) from which a one pound weight and a ten pound weight must be dropped to equal the momentum of 9mm and .45ACP projectiles at muzzle velocities, respectively. Also demonstrated as a fallacy by the Mythbusters in the episode Blown Away.
20 posted on
07/26/2011 5:20:41 PM PDT by
Yo-Yo
(Is the /sarc tag really necessary?)
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