EFP tutorial??

[Ropik]

I searched around on the Forum, on the net and in the books, but I was not able to found good informations about this type of charge. Everywhere are texts like " explosion turns the metal plate into semi-solid dart with high penetration, and thats it", but accuracy is scarce. What ratio of plate/explosive weight is best? Which metals are capable of this projectile forming(I know, copper is best, but improvisation rules the world)? Optimal thickness/diameter of the plate? Which shapes of plate are useable? Is the "copper slug charge" in Black book companion functional?

Here are questions, many thanks for replies.

[Doug]

This page has some standoff distances for various size and types of charge, unfortunately, they are just labeled as "small" or "large"
http://www.globalsecurity.org/military/systems/munitions/m303.htm

I found a link that named tantalum, iron and copper as having been tested, again, no specifics.

You may want to try searching for "Misznay-Schardin effect"

Misznay Schardin. (Jane's Mines and Mine Clearance 2002-2003) Named after its inventors, an effect used for the penetration of armor. A shallow dished metal plate (normally copper or steel) is forged into a projectile by the detonation of a charge. The fragment, sometimes called a self-forging fragment or explosively formed projectile/penetrator (EFP), has sufficient density and velocity to penetrate armor at ranges of several meters. The range makes the Misznay Schardin plate ideal for use in off-route mines, while the low weight and compact profile have led to its widespread use in modern scatterable anti-tank mines.

Edited for dodgy spelling.

[Ropik]

I searched for M-S effect, but again - nothing really useful turned up.

David Harber's book Improvised land mines says that the april 1987 issue of Military Technology magazine has good article about EFP. MILTECH online, anyone?