KE/Ef = TE

TE-KE = WE

WE/(C^2) = HF



2550 J

2550 J / 0.323

7895 J - 2550 J = 5345 J

5345 J / (0.65 cm^2)

12.650 kJ/cm^2



1558 J

1558 J / 0.349

4464 J  - 1558 J = 2906 J

2906 J / (0.556 cm^2)

9.401 kJ/cm^2



.222 Remington (approx.)

1664 J

1664 J / .335

4967 J - 1664 J = 3303 J

3303 J / (0.556 cm^2)

10.683 kJ/cm^2


.22-545 (approx.)

1812 J

1812 J / .316

5734 J - 1812 J = 3922 J

3922 J / (0.556 cm^2)

12.686 kJ/cm^2


Check:


12.65 * (0.556^2)

3.911 * 1000

3911 J / (1 - .316)

5718 J - 3911 J = 1807 J

1807 J 

919 m/s