[<1/1,000,000th%]

The energy is about twice as much because the handgun ammo mass is much greater.

[gundog]

Speed kills. Spritzer bullets start doing gymnastics on impact at velocities greater than about 2200 fps.

[Elsie]

The energy is about twice as much because the handgun ammo mass is much greater.

What has energy to do with mass?

Where's the velocity component??

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In physics, the kinetic energy of an object is the energy that it possesses due to its motion.^[1] It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

 

https://en.wikipedia.org/wiki/Kinetic_energy