Recently, I hand-loaded some Alliant Reloader Powder I had in my lower cool dry garage cupboard.

It was for my 7mm Rem Mag rifle and discovered the powder lost some of its potency. It was an opened can and had about a half pound left. All of the loaded ammo fired fine but lost a couple hundred feet-per-second from published data. This powder had very little solvent smell and looked fine.
I was looking for a near max load.
I loaded rounds later in steps to see what I could wring out and did so just fine.
I would buy a new pound of Alliant Powder as soon as it is available and consider quickly using the older powder.
I also loaded some rounds with a new can of IMR powder which had a potent solvent smell. These rounds followed published data very well.
New powders often have a solvent Acetone like smell and over time the opened can will lose the solvent smell. Over longer periods, it will degrade to an acidic off smell. When powder has that off smell it is time to dispose of the powder. Below is what Alliant says about storage and handling of modern powder.
https://www.alliantpowder.com/getting_started/safety/storage_handling.aspx
Another article I liked below.
https://www.rifleshootermag.com/editorial/how-to-determine-gunpowder-shelf-life/83922
Good Shooting!
After sighting in my rifle, one of my moose hunting shot techniques is to shoot multiple “fast” long range shots like I am in the field, off my Bog Death Grip below as an example off my Bog with my heavy recoiling .375 Ruger. 


First, I like my new Browning X-Bolt rifle, but some of you know I had difficulty cleaning the red sealant out of the adjustment screw Allen wrench hole a few weeks back. Thinking my 2mm wrench stripped the hole. But I revisited the adjustment with a tool that I can put pressure on to get deeper in the Allen socket hole.
As you may know, I have been working up hand-loads for my moose hunt and finding the Nosler 168g ABLR reaching over 3000 fps with IMR 4831. But the question is, with what accuracy or groups? 






My Browning 26 inch 9.5 twist rifle barrel likes hand loaded 7mm 168 grain Nosler ABLR with a hot load of IMR 4831 per Nosler web load data. I chrono’d an average of 3005 fps. Wow! These are cookin’ !! COAL was 3.255 inches. No pressure signs except the primer was a bit flatter… as expected. Three rounds measured 3/4 inch but more testing will firm that up. I will change the trigger to a Timney at some point as it is impractical to easily adjust with a 2mm Allen wrench on a sealant filled screw. If you like 4 pounds for a factory trigger it works, for some hunters, not me. All my rifles are set near 3 pounds. 
I purchased Norma Brass this January for reloading my new Browning Rifle for moose hunting. There were no other Brass manufacturers available on the Internet, that I could find at the time… but glad I bought them.
