This Clear Ballistics Gel that I will be using for expansion tests meets the FBI ballistics testing protocol. This amazing material is completely synthetic and reusable by melting and remolding. It can be stored at room temperature and won't rot or become unstable.
Due to info requests here is the manufacturers information:
I purchased it from Clear Ballistics. Their website is www.clearballistics.com
FBI block
http://store.clearballistics.com/product-p/608729261421.htm
Sniper Block (two FBI blocks)
http://store.clearballistics.com/product-p/608729261513.htm
