Since the last ammo shortage I started to regularly purchase primers and powder and .22lr ammo  I always rotate it and date them when i buy them.  I have been storing them in there original containers as mfg suggests,  I also have primers and powder from when I moved back to this state in the mid 80's with sales tags on them from Edelmans on rt46 in totowa and Meltzers in garfield and they all seem to function just fine being stored in their original containers for 30+ years although I dont own a chronograph to observe any minute variations in performance.

I feel unless I can move to a free state and shooting off my back deck when I retire I have close to a lifetime of powder and .22s that I would like to store.   I have seen youtube videos of people sealing their components in those food sealing machines.  has anyone tried this and what do reloaders feel on this.      any suggestions 

I cannot speak to the advantages of vacuum sealing ammo or powder.  However, several weeks ago I did purchase a FoodSaver vacuum sealing machine at Costco. Have since seal a lot of meat, steaks, chicken, rice, etc using it. Am very happy with the performance of the machine. I would not hesitate to use it for ammo storage if that is what I decided to do.  

https://www.tractorsupply.com/tsc/product/remington-weathertight-tote-87-qt-1129335?cm_mmc=feed-_-GoogleShopping-_-Product-_-1129335&gclid=EAIaIQobChMIyvTa3JuY6QIVio7ICh1wWQdPEAQYASABEgL3FPD_BwE

IRIS makes a bigger one with wheels too.

 

I throw a punch of desiccant in, and into the cool basement.

 

I think something like this is the best storage option for large volume... my basement is cool and dry anyway with dehumidifier but this is just another layer of keeping moisture out.

Since the containers should be sealed anyway, this really comes down to a tempature issue I believe.

I also have pelican cases that are much better but substantially more money.