Correct. Saiga fires both but because its marked .308 Winny. There are lots of marked .308 semi-autos out there that will fire 7.62.

Headspace...headspace...headspace.

Skyguy and I were just having the .223 / 5.56 vs. .308 / 7.62 discussion the other night. I'm a firm believer in energy on target and BIG holes. Yeah, you can't carry as many rounds....but you don't have to shoot as much either. One and done battle rifles are the way to go. There is a reason why our troops and special operators carry the SCAR-17 now.

5.56 is a great, cheaper weekend round, less recoil and more rounds for the weight....but I want chit dead right fuggin' now. But that's just me. I wouldn't turn down a nice 5.56.
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“If the military were fighting for our freedom, they would be storming Capitol Hill”. – FleaFlickr02