David2584, I've found my Jag's blades to act very much like my Buck, plus 420HC is one of the cheapest knife steels there is so I'm fairly certain that is what it is. The reason a Buck or Case would hold an edge longer is because they are probably better heat-treated. 420HC can be an excellent steel or a poor one depending on how it's handled.
KentDog, I've always thought the Jag's handles looked nearly identical to the BM's they're based on. Plus I've stripped the Jag's down to their core metal and it acts very much like Zamak (Zinc and a few other things) which is also one of the easiest and cheapest metals to cast so I'm pretty sure about that too.
I may be wrong, but until I see definate proof, this is what I believe Jag's are made of.
[This message has been edited by Disco Stu (edited 12-12-2000).]