[Eye of Unk]

I work with composites, and I can say its not difficult to make a shotgun shell out of a clear polymer, it may be a one shot affair and not re-loadable. Every angle and dimension can be duplicated. The primer would be an issue...for now.

And the slug can be a solid chunk of leaded glass for weight with a polymer shell or jacket so it will rifle or be rifled.

Now doing the same to a cartridge would be more demanding because then you lose all semblance of ballistics.

[Clay Moore]

Clear shotgun shells are not new. The idea “failed” because the semi-autos would rip a chunk out of the base and jam.

http://www.gunauction.com/search/displayitem.cfm?itemnum=7340328

[IMR 4350]

Wanda made plastic shotgun shells.

They were different colors for different gages IIRC.

Could have just as easy been clear.