Sadly no, as I was just explaining elsewhere it came down to me being stupid and careless. I followed all the correct procedure and then cut up the cartridge; it's at that point I was stupid and decided to investigate if the primer cap was pierced (my firing pin is a little damaged), followed by being careless and causing it to ignite, which blew it apart. Lesson learned and no doubt a scar to remind me.How did that happen? Went off after opening the gun?