3 ms·
Velocity isn't really what you care about though. I understand the point you're trying to make, but that table really points out that the type of the round you'
by remarkEon 7y ago
Velocity isn't really what you care about though. I understand the point you're trying to make, but that table really points out that the type of the round you're using has a greater effect on velocity than the barrel length itself. The linked muzzle energy plot, which is what you really care about, shows this quite well, where we stay fairly stable for all tested rounds and fall off significantly at barrel lengths shorter than 7".
- EForEndeavour 7y agoMuzzle energy is defined as the bullet's kinetic energy upon exit, which is proportional to the square of velocity, which means barrel length necessarily affects muzzle energy more than muzzle velocity. From quick Google searches, 9mm pistol barrels are around 4-5 inches long, 9mm rifles around 16". This has a major impact on muzzle velocity, and an even greater impact on muzzle energy.