The Firing Line Forums - View Single Post - Fuller’s Earth, Secondary Explosive Effect, and How Time Flies

Jimro · November 20, 2012, 02:50 PM

An alternate explanation is that the primer explosion pushes the bullet into the lands, jamming it in place. This causes the burning powder to not have the normal expansion space because the bullet is not moving forward and the force of resistance is greater on a stationary object than a moving object.

This causes a "plugged bore" event and the pressure level in the cartridge increases to detonation levels, and then boom.

The exact causes of SEE aren't as important as ensuring the conditions that are known to cause it are avoided.

Jimro

November 20, 2012, 02:50 PM	#21
Jimro Senior Member Join Date: October 18, 2006 Posts: 7,097	An alternate explanation is that the primer explosion pushes the bullet into the lands, jamming it in place. This causes the burning powder to not have the normal expansion space because the bullet is not moving forward and the force of resistance is greater on a stationary object than a moving object. This causes a "plugged bore" event and the pressure level in the cartridge increases to detonation levels, and then boom. The exact causes of SEE aren't as important as ensuring the conditions that are known to cause it are avoided. Jimro __________________ Machine guns are awesome until you have to carry one.