Source for when powders were introduced and/or discontinued?

[Andy_P]

It would be interesting to know when "new" powders were introduced, and for those of us with discontinued powders, when it was discontinued.

We often wonder when for example Varget was introduced, or when H870, or WC785 for example were discontinued. We can know that it's at least X years old when we have that information.

Has anyone done up a "Powder Timeline"?

[340six]

be a good thread and interesting to boot.
FYI i have old card board containers of Red Dot, Had Unique, metal cans of PB and 4320 and it was stored inside in a/c- heated home on a self for many years, And was 100% still like the day it was made storage makes for good bad powders
I still have a full can of WW785 and Dupont 4350 that are fine but have no use for them. No one local wants them