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Old 08-31-2018, 09:21 AM
Ronin84 Ronin84 is offline
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Default E-Factor

I've been away from my books for a bit and I don't remember how calculate E factor for weapons that are not in the rules. Help?

I know it had to do with muzzle velocity and bullet dia / 50 I think but I'm not sure. IF someone could even point me to where it's at in the books...I would appreciate it!

Thanks in advance

Ronin84
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Old 08-31-2018, 11:42 AM
mmartin798 mmartin798 is offline
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Default

In 4th ed, it's on page 92:

(D*V)/50 = E

where D= Projectile diameter in inches, V=Velocity at launch (muzzle velocity) in feet per second, E=E-Factor

For metric

(D*V)/387 = E

where D is mm, V is m/s, E=E-Factor
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