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WTB: 1000 rounds of 223/556

Posted: Tue Jan 22, 2013 12:34 pm
by Rob
Price?

Thanks!

Re: WTB: 1000 rounds of 223/556

Posted: Tue Jan 22, 2013 12:45 pm
by ADOR
You do know there is a difference in the ammo don't you?

Quote from another source.

The .223 Remington is a sporting cartridge with the same external dimensions as the 5.56x45mm NATO military cartridge. It is loaded with a .224" diameter, jacketed bullet, with weights ranging from 40 up to 90 grains, though the most common loadings by far are 55 grains.

The primary difference between .223 Remington and 5.56 x 45 mm is that .223 is loaded to lower pressures and velocities compared to 5.56 mm. .223 Remington ammunition can be safely fired in a 5.56 mm chambered gun, but the reverse can be an unsafe combination. The additional pressure created by 5.56 mm ammo will frequently cause over-pressure problems such as difficult extraction, flowing brass, or popped primers, but in extreme cases, could damage or destroy the rifle. Chambers cut to .223 Remington specifications have a shorter leade (throat) area as well as slightly shorter headspace dimensions compared to 5.56 mm "military" chamber specs, which contributes to the pressure issues.

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.


I am headed to the gun show this coming up weekend so I will see what they have.

Re: WTB: 1000 rounds of 223/556

Posted: Tue Jan 22, 2013 1:29 pm
by Rob
I'm very well aware of the difference.

My AR is chambered for 556, so either will work.

Thanks ADOR!! :headbang:

Re: WTB: 1000 rounds of 223/556

Posted: Tue Jan 22, 2013 6:08 pm
by ADOR
Ok, just wanted to make sure. I finally got my hands on a M15 last year. They have over doubled in price since I left. You can't touch one in my area now unless you have over 1400 for it. The local gun shop has a few. 1400, 2200 and 3500. (last one is all custom). Mine looks full military with shorter barrel and collapse stock, has scope mount where I can still use the iron sites or use my detachable scope.

Re: WTB: 1000 rounds of 223/556

Posted: Tue Jan 22, 2013 10:59 pm
by Rob
Ohh I know! I lucked out and bought mine just before they sky rocketed in price! I only paid $650 for mine and could sell it for $2000+ now easily! I got VERY lucky!

Re: WTB: 1000 rounds of 223/556

Posted: Wed Jan 23, 2013 1:36 am
by ADOR
The prices will drop back down after the frenzy. Hell I seen some places online selling a brick of .22 ammo for 75 bucks. Local place it's now 18.99 for a box of 50. Crazy prices.

Re: WTB: 1000 rounds of 223/556

Posted: Wed Jan 23, 2013 6:35 pm
by Springfield
At the Lakeland FL gun show last weekend ammo prices were crazy: the lowest price I saw for a case (1K round) of 5.56 was $950. Did not see hardly any 7.62x39 (for AK rifles) at any price. Fortunately I bought a good amount of ammo a while back.

Re: WTB: 1000 rounds of 223/556

Posted: Wed Jan 23, 2013 6:44 pm
by Springfield
Here's a guy in FL with 223. You would need to pay shipping.

http://www.floridashootersnetwork.com/v ... 0&t=110182

Note that the Brown Bear ammo is steel cased, which I would not shoot in my AR because it wears the extractor.

Re: WTB: 1000 rounds of 223/556

Posted: Wed Jan 23, 2013 6:53 pm
by ADOR
Found some .22 ammo for this weekend finally. I don't want to shoot my stock down. Regular prices. They are short and longs. The general public seems not to be interested in them for some reason. Just fine for the single shots and revolvers I will be playing with. Picked up a Rossi M720 .44 special yesterday. Cool little gun.

Image

Same one, just different factory grip. Looking at picking up two more before I head back to work. Tarus circut judge in .410/45LC wood stock version and Rossi model 92 lever action. Got to decide more on the lever action not sure if I want .44 mag, .357/.38 special or 45LC version and then narrow it down to the 16 or 20 inch barrel.

Re: WTB: 1000 rounds of 223/556

Posted: Wed Jan 23, 2013 9:19 pm
by SHEEPMAN!
That 45 colt is a good old round. I think .44 Special is enough for any hand gun. That Taurus is cute. I have my G'dad's S&W Triple-lock...in Nickel. 6 inch barrel. My recco on the rifle is the longer the barrel the better. Sight radius = accuracy.

2 cents