'Truck/Trunk gun' KB danger?

[Lucky]

I was told in a class that you shouldn't keep ammunition in a vehicle, because over time the vibrations grind it into a finer powder, altering the burn rate, and possibly damaging the gun. .22LR and shotguns were supposed to be less affected by this.

True? Why are the latter less affected?

 

[Cannonball888]

I have adjustable independent suspension for my car ammo for a smooth grind-free ride. Seriously, if it's really true, just rotate out your ammo once in a while and there's no problem.

 

[desidog]

Mercedes C240 4matic wagon w/ Beretta CX4 in the truck by the spare tire: I have not noticed any difference between ammo that's been rolling for six months, and ammo straight off the shelf.

The car rides well on the potholed dirt fire access roads i drive up to unload the guns...and i got such a good deal on it that i'm still smiling! ..it was the same price as a comparable Taurus; how could i say no?

 

[owlhoot]

Dog, you don't have to apologize to us for driving a Mercedes.

 

[jaholder1971]

Horse manure.

I recently shot several boxes of .357 Magnum Federal that had been in the back of a Bronco for 20 years. Stuff ran fine.

 

[Larry Ashcraft]

Urban legend. One of those things that "sounds right, so it must be true".

Don't worry about it.

 

[dakotasin]

fwiw... i had some old 30-30 ammo in my truck (f-250) for maybe 3 or 4 years; stayed in there thru the heat of summer, and the daily farm chore drives, etc. when i finally decided to shoot the stuff, it was most definitely a higher pressure ammo than what the factory would let out on purpose (backed out primers, pierced a couple of winchesters). that said, the pressure was not dangerously high, but higher than standard.

that is a single isolated incident, i understand, but it happened to me (and didn't scare me enough to make me cease the practice, though the ol' f-250 is, thankfully, gone). brands were federal, winchester, and remington.

 

[Lucky]

Interesting. I'd suppose on erring on the side of caution for now.

 

[WardenWolf]

It's BS. People carry vehicles around in cars for years and even decades and nothing happens.

 

[X-Rap]

I had heard the same thing of putting loaaded ammo in a vib. cleaner to polish after loading.
After a little thought I considered the vibration in a 18 wheeler running from coast to coast making a typical freight run. 3000 miles in one of those rough riders will out due anything a typical car or truck can do.

 

[VA27]

It can happen. A friend of mine blew up a perfectly good AR15 with some LC69 ammo that had been riding around in the trunk of his patrol car for a few years. He sent the pieces of the gun and a sample of the ammo to Colt and that's what they told him.

I think if you rotate your ammo out every year you'll be fine.

 

[bunnielab]

I would think it would depend on the powder in question and the density to which it is loaded. A very small ball powder should be unaffected but maybe something thin and flaky like trail boss might be?

 

[ConstitutionCowboy]

If cars vibrated that much, no one would ever suffer kidney stones.

Woody

 

[PT1911]

It's BS. People carry vehicles around in cars for years and even decades and nothing happens.

that is pretty impressive.. what type of vehicle you carrying around in what type of car?

anyway.... sounds like BS to me...

 

[Lucky]

There's enough yes or maybe's to take the precaution of cycling ammo out. Thanks.

 

[Crash_Test_Dhimmi]

The crate of Ammo rolling around in the back of my HMMWV shot great after 14 months in the sandbox.