I see that rra chambers ther rifles in this calibar is this diferant than 223rem sorry about the spelling

yes and no.  As I understand it you can shoot .223 in it and I think 5.56. I could be wrong though.  I believe the chamber is like a cross between an 5.56 and a .223 rem.  go to the www.ammooracle.com.  It touches on this subject.  Or call your manufacture.

From the ammo oracle [url]http://www.ammo-oracle.com[/url]
The military chamber is often referred to as a "5.56 NATO" chamber, as that is what is usually stamped on military barrels.  Some AR manufacturers use the tighter ".223" (i.e., SAAMI-spec and often labeled ".223" or ".223 Remington") chamber, which tends to give you more accuracy but, in self-loading rifles, less reliability, especially with hot-loaded military ammo. [b]Some AR manufacturers use an in-between chamber spec, such as the Wylde chamber.[/b]  Many mis-mark their barrels too, which further complicates things.  You can generally tell what sort of chamber you are dealing with by the markings on the weapon, but always check with the manufacturer to be sure.

223 wylde chamber throat is alittle shorter and tighter than a nato 5.56, so far I have had no troubles shooting LC or S&B m193, my reloads shoot far better in it