Well I will vouch the Bh209 has an unlimited shelf life. Its been over a year since I bought I case of it from Western Powders. I hated having all the bottles and since they were half full I just opened them all up and combined two bottles into one. I have had no issues with hang ups or a lack of performance with it. Plus last year hunting I had the same powder flask through out the season. From 60 for antelope to below zero with elk and no issues. By far I truly believe the powder is worth the 27-32 dollars. Just wish it would come in bigger volume like a pound or a 5 pound keg. This new powder might be good for all of us. If it is truly as good as BH209 and cheaper maybe Western Powders will drop the price or for the same price give us a pound.