Oh,.....and as far as the endless supply of confused naysayers ( beleive me they ABOUND ) using an elastomeric polymer as part of a Black Powder, or White Powder cartridge case component.....
.......witness the modern shotshell whistle
Those worried about the heat that BP generates,..... reflect on the fact that the ablative tiles that shielded our space shuttles belly and wing under surfaces are GLUED on.
All these now ancient polymeric cats are outta' the bag ( and some of them SHOULD have remained DOD classified / top secret), everybody has the formulas, read the specs, take yer pick, pick up the phone and have em' drop shipped. One lifetime's not going to be enough to try em' all,
.....GTC

Last edited by crossfireoops; 05/30/17.
Member, Clan of the Border Rats
-- “Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it.”- Mark Twain