5.56mm on sale cheap

http://www.palmettostatearmory.com/500.php




Pricing:
$5.49 per 20 round box
$137.25 per 500 round Case

Shipping:
$12 per 1,000 rounds

 

bump for a hell of a deal

 

ordered a case

 

Ive been waiting on the 1000 rd to come back into stock. Good find btw

 

Wonder if they have .223?

 

Hawaii: No sales.

 

Pretty much the same thing, I shoot both with no probllem out of all my ars

 

yea as long as its rated to do so then you can go with the 5.56

 

Was always told that .223 in 5.56= fine, but not the other way because of thicker brass walls in the cases of the mil. stuff creates higher pressures.

 

this is correct. the gun will still shoot if you run 5.56 in a .223 but expect more malfunctions

 

Do they only have 55 grain?

 

M193 is 55 grain.

Here is some M855, they have a couple others as well.
http://www.palmettostatearmory.com/759.php

 

I know most (if not all) reloading manuals state you should reduce max-charge loads by at least 10% when using mil-spec brass.

 

didnt I try to tell you about this a month ago!? post #6
http://www.tacomaworld.com/forum/guns-hunting/177814-223-ammo-sale.html

 

This is a 223 caliber and one HELL of a deal! Im stocking up on these

 

This is a copy and paste, of course, but explains the difference. Seems a 5.56 can over pressure "some" .223 chambers/guns by 20,000 psi per measuring styles. That's something I don't want to play with, have fun.




While the 5.56 mm and .223 cartridges are very similar, they are not identical. Military cases are made from thicker brass than commercial cases, which reduces the powder capacity (an important consideration for handloaders), and the NATO specification allows a higher chamber pressure. Test barrels made for 5.56mm NATO measure chamber pressure at the case mouth, as opposed to the SAAMI location. This difference accounts for upwards of 20,000+ psi difference in pressure measurements. That means that advertised pressure of 58,000 psi for 5.56mm NATO, is around 78,000 psi tested in .223 Rem test barrels (SAAMI .223 Rem Proof MAP is 78,500 psi so every 5.56mm round fired is a proof load, very dangerous). The 5.56 mm chambering, known as a NATO or mil-spec chambers, have a longer leade, which is the distance between the mouth of the cartridge and the point at which the rifling engages the bullet. The .223 chambering, known as the "SAAMI chamber", is allowed to have a shorter leade, and is only required to be proof tested to the lower SAAMI chamber pressure. To address these issues, various proprietary chambers exist, such as the Wylde chamber[2] or the Armalite chamber, which are designed to handle both 5.56 mm and .223 equally well.

Using commercial .223 cartridges in a 5.56-chambered rifle should work reliably, but generally will not be as accurate as when fired from a .223-chambered gun due to the excessive leade. [3] Using 5.56 mil-spec cartridges (such as the M855) in a .223-chambered rifle can lead to excessive wear and stress on the rifle and even be unsafe, and the SAAMI recommends against the practice.[4] Some commercial rifles marked as ".223 Remington" are in fact suited for 5.56 mm, such as many commercial AR-15 variants and the Ruger Mini-14, but the manufacturer should always be consulted to verify that this is acceptable before attempting it, and signs of excessive pressure (such as flattening or gas staining of the primers) should be looked for in the initial testing with 5.56 mm ammunition.

 

Well I dont think it will over pressure an AR-15 so im good

 

Damn it, I live in San Francisco. Fail.

 

I placed an order yesterday. I have a class coming up in December 1500 or so rounds in three days. Should be fun.