CNNだと5.56mmも7.62mmあるらしいから、もう何撃っててもおかしくない。

http://edition.cnn.com/2017/10/02/us/las-vegas-attack-stephen-paddock-trnd/index.html
> is that at least one of the rifles used was altered to function as an automatic weapon, the official said.
>Among the weapons found were a .223 caliber and a .308 caliber.