The powder is Vihtavuori N350 - too bad, got to use whatever I got. I read in here (and Glock forum) that N350 can use as Open powder (of course, not as good a HS6 or Autocomp) - so I figure I start small (4.0gn) and go up the powder load.
Hopefully I won't blow up my gun (at least not yet) since right now my gun is not 100% recycle after each round.
One question that I asked was the shelf life of the powder - is 1999 too old? when does the powder goes bad (or lose its power)? I don't have much experience with Open powder, most of my Tigtgroup or WST or VVN320 are used up within 6 months after opened used for my Limited gun load.
I guess I need to read more before some other people call out for my stupidity again. LOL.