Sorry if this has been beaten up, searches only show "duplex" reticles...
Basicly they are steel shotgun slugs designed for either extreme penetration or super expansion. The PDF file at the bottom of the link shows a conventionl lead slug defeating two sheets of steel and their slugs doing 9 sheets and 16 sheets for two different types. They also offer an expanding slug that reminds me of the original black talons except it is opening almost two inches. Prices online were not horrible if it performs as advertised. Mall ninja stuff or a genuine improvement over conventional lead foster slugs?
http://www.ddupleks.lv/EN/articles/show/le_video
Basicly they are steel shotgun slugs designed for either extreme penetration or super expansion. The PDF file at the bottom of the link shows a conventionl lead slug defeating two sheets of steel and their slugs doing 9 sheets and 16 sheets for two different types. They also offer an expanding slug that reminds me of the original black talons except it is opening almost two inches. Prices online were not horrible if it performs as advertised. Mall ninja stuff or a genuine improvement over conventional lead foster slugs?
http://www.ddupleks.lv/EN/articles/show/le_video