WW2 Tank Gun comparison

I thought it would be interesting to compare the performance, potency & energy of the premier high velocity tank guns of the west in WW2 in depth & detail, so here we go.

8.8cm KwK43 L/71

Projectile weight: 10.4 kg (APCBC)

Sectional Density: 1.910

Muzzle Velocity: 1000 m/s

Total Kinetic Energy: 5200 KJ

Kinetic Energy pr. cm^2: 85.49 KJ

7.5cm KwK42 L/70

Projectile weight: 6.8 kg (APCBC)

Sectional Density: 1.719

Muzzle Velocity: 936 m/s

Total Kinetic Energy: 2979 KJ

Kinetic Energy pr. cm^2: 67.43 KJ

7.62cm 17pdr

Projectile weight: 7.7 kg (AP)

Sectional Density: 1.886

Muzzle Velocity: 883 m/s

Total Kinetic Energy: 3001 KJ

Kinetic Energy pr. cm^2: 65.8 KJ

9.0cm M3 L/53

Projectile Weight: 10.94 kg (APBC)

Sectional Density: 1.921

Muzzle Velocity: 853 m/s

Total Kinetic Energy: 3980 KJ

Kinetic Energy pr. cm^2: 62.56 KJ

8.8cm KwK36 L/56

Projectile weight: 10.4 kg (APCBC)

Sectional Density: 1.910

Muzzle Velocity: 773 m/s

Total Kinetic Energy: 3107 KJ

Kinetic Energy pr. cm^2: 51.09 KJ

7.6cm M1 L/55

Projectile weight: 7.0 kg (APCBC)

Sectional Density: 1.724

Muzzle Velocity: 792 m/s

Total Kinetic Energy: 2195 KJ

Kinetic Energy pr. cm^2: 48.38 KJ

7.5cm KwK40 L/48

Projectile weight: 6.8 kg (APCBC)

Sectional Density: 1.719

Muzzle Velocity: 790 m/s

Total Kinetic Energy: 2122 KJ

Kinetic Energy pr. cm^2: 48.03 KJ

The best performers in terms of their size compared to their potency & energy are clearly the 8.8cm KwK43, 7.5cm KwK42 & 7.62cm 17pdr, these three also feature the best penetrative performance of all the guns above which is also proportionate to their KE pr. cm^2.

Next I'll post the Aberdeen test results for each gun against 240 BHN RHA armour.

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