Powder-Ammo longevity-Storage is the key.

[airedale]

Just watched a video on fortunecookie 45lc's channel a favorite of mine for reloading tips, he loaded up some 30-40 krag ammo using surplus H4831 powder he purchased back in the 70s but was actually produced in the 40s. When fired ignition went off well, the bullet speed was chronographed and right where it was supposed to be and it grouped well.

I personally have had similar results firing old ammo loaded with powder from that era, stored properly it produced the same performance as the day I loaded it.

I once read that nobody really knows how long ammo loaded with smokeless powder will keep if stored under proper conditions because all that is tested still goes bang.

From what I have seen I would have no problem buying old ammo that was kept well and in good condition especially in hard to get cartridges.

As the old saying goes keep your powder and ammo dry and stored properly.

Al