Powder I know the whole wooden magazine 1" thick walls. It also dawned on me that 16lb cases available doesn't take long to be over 50lbs. I've read on other forums that "20 lbs is a lot of powder" I routinely have well in excess of 20 lbs. How do you guys store powder and primers? Separate magazines? I'm a belt and suspender kinda guy, I store them in separate magazines in separate rooms on the highest floor of my house. My rationale is "in the event of a disaster I want the least amount of compression" Loaded rounds I keep in ammo cans. Again, I'm not quite certain what happens when 500 rounds of 9mm heat up to like 2000 degrees Fahrenheit. I hope I never find out. I'm not really inclined on calling up my local fire chief and say "Hey I have a question..." cause I'm pretty sure his response will be, "you have a problem..." and then every letter of the alphabet visits.