If you read about the PGI shooter course both for 1.3 and the 1.4 Pro products it outlines it is NOT to be used to allow purchase of either 1.3 or 1....
In the past I tested this gray fuse with Methylene Blue and it reacts for perchlorate. I may even have pictures of it somewhere on the forums. I will...
Unfortunately it is more of that perchlorate fuse. It is also poorly fused. If these connections were done using traditional black powder quick match...