Steve M.,
Thank you for the input.
Even though in the strictest sense, we cannot use the term molecule, in a broader sense, we can use it to convey a thought. The idea here is to get people to look inward of the cartridge case, instead of just looking at the outward symptoms. In other words, we can see the symptoms, but what are the cause(s).
Sometimes, you need to be a little forgiving of a person's chosen terminology, in order for that person to convey his thought. Educators, scientists, etc. will use less than correct terminolgy, to get their points across. That's how we learn.
You did cause me to do a little research. But that's okay, I like learning. The following is from a wiki article on molecules.
No typical molecule can be defined for ionic crystals (salts) and covalent crystals (network solids), although these are often composed of repeating unit cells that extend either in a plane (such as in graphite) or three-dimensionally (such as in diamond or sodium chloride). The theme of repeated unit-cellular-structure also holds for most condensed phases with metallic bonding.
The science of molecules is called molecular chemistry or molecular physics, depending on the focus. Molecular chemistry deals with the laws governing the interaction between molecules that results in the formation and breakage of chemical bonds, while molecular physics deals with the laws governing their structure and properties. In practice, however,
this distinction is vague. In molecular sciences, a molecule consists of a stable system (bound state) comprising two or more atoms.
Read the whole article at;
http://en.wikipedia.org/wiki/Molecule
SteveM.,
please give your strict (or less than strict) interpretation of the phenomena known as brass springback, and thoughts on brass dimension changes over time.
Thank you,
longshooter
