A .458 SOCOM on full-auto needs no explanation other than itself.

This one’s for the other gun-blogging Kevin in Arizona.

That took about two seconds, by my count.

( (10 rounds of Socom x 300 grains a round) / 2 ) / 437.5 grains per oz. comes out to just over 3.43 ounces of lead traveling downrange every second, versus 1.89 ounces of lead with 55gr .223. 

Ouch.