If kept dry and between 40 and 80 degrees ammo will last a long time, but extreme heat and cold will cause the powder to break down. 100+ degrees wouldn't be good for it. Jose, The garage isn't a good place to store your ammo because of the heat and temp swings from day/night and day to day..
Considering this, what temperature can Ammo be stored at?
A general rule of thumb for ideal storage temperatures is between 55°F and 85°F. According to SAAMI (Sporting Arms and Ammunition Manufacturers' Institute) standards, extreme high temperatures (over 150° F) should be avoided.
Furthermore, is it OK to store ammo loose in ammo cans? Just to be safe, stick with a storage location that's properly ventilated. Many people actually seal their ammo in plastic containers to add an extra level of protection. They can also easily store boxes of ammo, instead of just loose rounds.
People also ask, can Ammo be stored in heat?
It will have to reach temperatures exceeding 400 degrees inside your vehicle before your ammunition is at risk of cooking off. Although the heat won't cause problems in the functionality of firearms or ammo, consider storing them in a closed container that is not exposed to the sun.
Can ammunition be stored with firearms?
Non-Restricted Firearms (c) it is not readily accessible to ammunition, unless the ammunition is stored, together with or separately from the firearm, in a container or receptacle that is kept securely locked and that is constructed so that it cannot readily be broken open or into.
Related Question Answers
Should I store ammo in my gun safe?
When storing ammo, make sure that humidity levels are low. Storing ammo in an airtight ammo can be a good option if you have large quantities susceptible to trapped humidity in packaging. Keeping your ammo stored in a gun safe uncovered for a few days can help extract excess moisture and prime it.Is it OK to store guns in the garage?
Based on gun experts, the ideal temperature that we should maintain for our gun storage is 70 degrees Fahrenheit with a 50% relative humidity. If your garage is unheated, you can still keep your guns there by using a dehumidifier or placing a gel desiccant in the safe to prevent moisture.Can you leave a loaded gun in a hot car?
Unless your car is on fire, the ammunition stored inside will not get hot enough to explode. Even in extremely hot climates that regularly reach temperatures in the triple digits, the temperature inside a vehicle will not reach levels that will adversely affect your ammo.How hot can ammunition get before it explodes?
Expose a bullet to a thousand degrees fahrenheit, and they will melt. Expose a loaded cartridge to a few hundred degrees and the primer will pop. Cartridges don't detonate.Is it OK to keep a magazine loaded?
When left loaded to full capacity and not used, most magazines will very slowly lose some amount of spring tension over time. That's where you unload your magazines and let them “rest” for a while, and switch to a second set of magazines to keep loaded for the next cycle.Does ammo go bad with age?
Ammunition doesn't “expire” per se, but the gunpowder looses potency over time. The largest risk to shooting old ammunition isn't a failure to fire, it's the risk that you will actually fire the shot and it doesn't have enough momentum to make it out the barrel.How long can ammunition be stored?
ten years
Is it bad to leave your gun in the cold?
It will not hurt your gun to be in the cold. Yes condensation can and will happen with the heat & freeze cycles. Although most gun oils will protect it just fine. Keep a soft padded zip up type pistol case in the car in the cold and put the pistol in it before you take it in the house.Will ammo go off in a fire?
In a fire, ammunition explodes due to the combustable powder inside the cartridge, but they explode with much less velocity than they would were they shot in a weapon. Yes, a fire can set them off and it is usually a very non-spectacular event. Bullets do not go flying around as if they had come from a gun barrel.Is it bad to keep ammo in a magazine?
Yes and no, but not because of the springs wearing out. The damage that comes from keeping magazines loaded is to the feed lips on the magazine. They will bend over time. That said, it will take a LONG time for this to happen with modern magazines and is generally only a problem with high capacity rifle mags.Will ammo fire when dropped?
By simple physics, dropping a loaded cartridge will result in it landing “bullet point first” or close to it 99.9999% of the time. When it does land rim/base first, it will NOT land in such a way as to have a stone or other object impact the primer with sufficient force to set it off (firing the cartridge).Can I keep my gun in my glove compartment?
Obviously, most people will transport handguns in a box or a holster, often in the glove box, center console or backseat of a car. The law also expressly allows the possession and storage of rifles or shotguns in the interior space of car or truck when in plain view.How many guns is an arsenal?
According to the media, two or more guns and more than 100 rounds of ammunition. Seriously, there is no definition. An “arsenal” is whatever the speaker wants it to be.Can you vacuum seal ammunition?
Vacuum sealing is more effective than anything, including ammo cans. Simply because its more sealed. If you really get wacko, buy some oxygen absorbers and throw them in with the ammo. You don't need silica gell because with a full vacuum pulled, there isn't any moisture left.What humidity should ammo be stored at?
50%
Where should you store ammunition?
It is recommended to store your ammunition at room temperature whenever possible. Storing your supply in ammo cans and ammo containers will also help prevent your ammunition from being exposed to extreme temperatures.Can you store ammo in plastic bags?
The plastic bags seem to be a good idea as well. To the OP: I use either boxed ammo or loose in an ammo can depending on type. I throw in a couple of desiccant packs to soak up any moisture in the air and call it good. Ammo cans are made to store ammo in the worse conditions possible.Does ammo expire?
Ammunition doesn't “expire” per se, but the gunpowder looses potency over time. The largest risk to shooting old ammunition isn't a failure to fire, it's the risk that you will actually fire the shot and it doesn't have enough momentum to make it out the barrel.What are the two main types of cartridges?
The ammunition used in a rifle or handgun is called a cartridge (or a metallic cartridge). There are two general types of cartridges available today: centerfire and rimfire. Many years ago people used a larger number of different rimfire cartridges. The rimfire cartridge gets its name because the primer is in the rim. 
