Quote:
Originally Posted by engineglue:
One formula I wanted to use is; penetration equals bullet weight times velocity divided by the diameter of the nose of the bullet divided by five. I don't really have the resources to acquire the data needed to make a chart which utilizes this formula.

The formula you propose sounds an awful lot like Vernal Smith's equation for bullet penetration in wetpack basically momentum divided by velocity and a scaling factor....
Penetration (inches) = Bullet Weight (lbs) x Impact Velocity (fps) / Meplat Diameter (inches) / 5
...found here
http://www.rathcoombe.net/scitech/b...s/methods.html
It's not bad for being as simple as it is linear equations have a certain robustness that seems to compliment their simplicity.