I’ve never fired/handled guns but have some knowledge of guns and their basic mechanisms, and this thought just came across. If you could make cartridges out of polymer/plastic, and they are significantly lighter, wouldn’t you want to switch to them asap? yet there is no adoption. On the other hand shotgun shells have always been plastic but it’s not problematic in any way? why is this the case?
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One of the issues is that the gun will get hot when you repeatedly fire the weapon. Some of the heat will be absorbed by the brass shell and will leave the weapon contained in the shell.
Shell will get so hot that they will burn if they come into contact with skin.
Polymer shell will not have the same heat absorbing properties and if the gun gets to hot the cartridge may “cook” off when loaded.
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