Short-lived powders

[gdaddybill]

Has anyone noticed that the Vitavouri 100 series powders don't last as long as some other brands. I just dumped some N110 and N160 that smelled acrid and the 110 produced squib loads in a 460 S & W--luckily the bullets made it out of the barrel. This powder is probably 10 years old but I have lots of other brand powders that are older and they seem fine.