vacuum packing handloads?

[spike1]

My information is correct, what is confusing if the term vacuum. The old military ammo is not really “Vacuum Packed” . The sealing process used requires heat when the container is sealed and this naturally causes a small vacuum inside. If most of these containers had a real Vacuum inside of them they would collapse in and crush the container.

The point is although the old military ammo is what we call “vacuum packed” it is a slight vacuum caused by the sealing process.

When we start talking about actual devices that pump the air out ??? ,,, Who knows what the vacuum level is ? It’s real easy to pump to ½ atmosphere or better and that would be in the danger zone for me.