Old AA#5 Powder

[500MAG]

I came across some powder at my dad's house that is over 20 years old. There was 1 canister each of H110, HP38 & AA#5. I loaded up some with the H110 and the HP38 and tested the rounds and everything was fine. I went to load some 9mm with the AA#5 and remembered hearing that this powder has been changed in the past few years and that the new data is not a match for the old powder. Also, I don't think that the AA#5 is as stable as the other 2 powders and may not be any good. Anyone have any ideas on this? If the powder is good does anyone have any of the old loading data for 9mm?

[rda72927]

I have about 1/2 of 8lb keg of early 90's, labeled made in Czech Rep. Only use it for 9mm.
Data from a 4 5/8 barrel:
125gr LRN 5.5gr Avg Velocity 1095
125gr LRN 6.0gr Avg Velocity 1263
Rainier 115gr JRN 6.0gr Avg Velocity 1007
Rem 115gr JHP 6.0gr Avg Velocity 1200

[Char-Gar]

The original AA5 was formulated and made in Israel for the 9mm pistol round. I have some of that stuff and it is good powder just a hair slower than Unique. I have not tried any of the newer stuff made someplace else.

I have had good luck with it in any application where Unique would be suitable. I don't find it better than Unique, but when I bought my stock it was considerably cheaper than Unique.