Sealed case-mouths...necessary...or dogma?

[Unobtanium]

I have noticed that most duty rounds are NOT sealed at the case neck. NO pistol rounds are, and I noted that:

5.56 TAP loads are not (GMX)
Black Hills 50gr TSX is not
Gold Dot 55 and 64gr is not

I could list more, but these are all "on the list", and considered G2G.

Is it not a big deal? Is a sealed case-neck superflous as neck tension solves the issue? Why does the military persist with the requirement?

[joshs]

In my limited testing, (unsealed rounds accidentally going in the washing machine) unsealed rounds have still detonated after being fully submerged.

[Odin Bravo One]

Why does the military persist with the requirement?

Because the military predicts storage and use of ammunition in conditions not normally associated with the rest of the shooting world. Neck tension doesn't solve the issue as it is subject to change under certain conditions.

[DocGKR]

Bingo!

[Unobtanium]

Bingo!

Is this something that matters to a civilian or LE, or is it something similar to "could get soaked in jet fuel for 48 hours and survive..."?

[Odin Bravo One]

I don't get worked up about it unless it is:

A) Going to be hotter than two rats getting it on in a wool sock behind the dryer vent.
B) Altitude.
C) Submerged.

[Rich]

I like my loads to be sealed at both ends especially if being stored for future .

Back when I started reloading I ask a few about buying primer sealer? They said it wasn't really needed.

So I went and loaded up some 9mm 124 gr ball and set a cartridge in a glass of water. They next day I shot it off.

As a Hunter/trapper I've gotten wet from rain /crossing creeks, falling in and breaking through the ice . No big deal all hunters have had it happen.
Never had a problem with water and ammo that isn't sealed up at both ends .

Still I prefer my SD ammo to be sealed up at both ends.

Now I have had WD40 damage my 222rem 45gr HP ammo. From spraying of my Bolt Action 222rem with WD 40 and loading back up. Condensation, Cold weather / rain was a bitch at the cabin.
I'm well aware of painless test on WD40 and primers . Never the less it happen to me according to Remington and the ammo I sent them back in the 80S.

[Chuck Haggard]

FWIW, Hornady reports Critical Duty being sealed at the primer and case mouth;

http://www.hornadyle.com/products/ha...-gr-9mm-lugerp

[Unobtanium]

I don't get worked up about it unless it is:

A) Going to be hotter than two rats getting it on in a wool sock behind the dryer vent.
B) Altitude.
C) Submerged.

What do you mean by Altitude? A hike up Pikes Peak, or a HALO jump?

[Unobtanium]

FWIW, Hornady reports Critical Duty being sealed at the primer and case mouth;

http://www.hornadyle.com/products/ha...-gr-9mm-lugerp

I see that. They cheesed out on their TAP rifle ammo.