how long does gunpowder last?

Question

does anyone know how long gunpowder lasts?

Answer 1

If the ammo is stored properly, it can be used for a very long time. The primary factor for power is the moisture that may get into the storage container and ruin the power. If it is kept dry, power can last well over 75 years.

Interesting factoid - never assume that a very old muzzleloader is empty just because it's been hanging over the mantle for the last 5 decades. Not very long ago, all firearms were kept loaded at all times. If you're not sure, have a gunsmith take a look at it!

Answer 2

If kept cool and dry, powder will last indefinitely. Some double based powders can have a chemical reaction if left inside plastic containers. If left in the factory container and kept cool and dry,. it will last a very long time.

Black powder will be the same but you need to think about location more since you do not want it near a source of static electricity.

There have been more than one 200 plus year old gun firing the original load left in it by accident.

Answer 3

I've fired .45-70 ammo that was loaded at Frankfort Arsenal in 1884.

And a friend shot some original .45 Schofield ammo that was loaded in 1875.

Some of the rounds went "Futtz" and some went "BOOM" but it all fired, and all of it pushed the bullet out of the barrel.

Doc Hudson

Answer 4

Stored properly, a very long time. People shoot fifty-year-old ammo all the time.

Answer 5

It will last forever as long as it is kept well sealed. If it smells like denatured alcohol when you open it, it is still good. If not, it isn't good anymore.

Answer 6

It will last pretty long just dont get it wet or let something get in it.

Answer 7

decades if you know how to store them properly...