Should i shoot .223 or 5.56?

I just got my AR yesterday.
And someone told me it was bad to shoot 5.56 from this, or it could of been the other day around and been .223.

I've always thought they were the same bullet.

But should i be shooting .223 like the remington ones at walmart that say .223 on the box?

Or look for ones that say 5.56 NATO?

Here is my gun

http://i301.photobucket.com/albums/n...y/IMG_0422.jpg


Its a Double Star 15 CAR / 16" / HBAR

What is the barrel marked?

Says DSC 5.56 NATO

I didnt even notice that.

So thats what i should shoot?

The barrel will be stamped for caliber. If it's stamped for 5.56 NATO shoot whichever you like.
If it's stamped for .223. Shoot .223 only.

You'll also need some kind of riser to get your red dot sight higher so you can actually see over the front post.

Quote:

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Originally Posted by sevin8nin

You'll also need some kind of riser to get your red dot sight higher so you can actually see over the front post.

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Haha yea i know. I just put it on there for looks.
Im on a budget so im going to get some iron sights to do me for now.
I have to buy the .22 conversion kit first, then im going to get a scope when my birthday comes around.

Quote:

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Originally Posted by sevin8nin

The barrel will be stamped for caliber. If it's stamped for 5.56 NATO shoot whichever you like.
If it's stamped for .223. Shoot .223 only.

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This is correct. Just to further educate the OP. The barrel marking refers to what the barrel's chamber is set up for. While .223 and 5.56 are the same size round, 5.56 fires at a higher pressure and therefore requires a slightly larger chamber.

-TS

Where can i get 5.56 bullets?
When i go to walmart all i see is the Remington .223's
At the pawnshop they have some wolf .223's but they are steel casing. but there only like 5 dollars for 20.

i shot about 200 yesterday with no jams, so i guess there fine.