I loaded 50 rounds of 308 win 2 years ago using a new container of IMR4166.
The reloads and the container sat on a shelf (indoors cool basement) until a couple of nights ago when I was going to reload more 308 win.
I removed the cap on the container and the ammonia smell almost blew me away. The powder was a bright rust colour.
I dumped the powder on my lawn then started to pull the bullets.
All of the bullets were corroded. The primers were corroded. The cases were corroded.
The powder in the cases was still black but in clumps.
I checked the rest of my open containers of powder (various brands) and all were fine.
The reloads and the container sat on a shelf (indoors cool basement) until a couple of nights ago when I was going to reload more 308 win.
I removed the cap on the container and the ammonia smell almost blew me away. The powder was a bright rust colour.
I dumped the powder on my lawn then started to pull the bullets.
All of the bullets were corroded. The primers were corroded. The cases were corroded.
The powder in the cases was still black but in clumps.
I checked the rest of my open containers of powder (various brands) and all were fine.