That's about how far I was from some 2,000 pounders dropped by AF Reserve F-105s at a firepower demo at Ft. Sill, when I was a junior AF officer. It was like getting smacked in the chest or stomach by someone your own size and weight. Too your breath away it did.
I was referring to 105mm arty cannon. The 155mm is somewhat of a step up from that, and 203mm isn't all that much more either...
I'm telling you that the percussion was incredible. They're showing on TV these "wooshes" going out. BULLSHIT!
I heard that crap coming outbound from 18 miles away. I don't need to tell you what I heard on the receiving end. Based on CEP, I'm guessing the closest rounds during the "barrage" landed outside of 500 yds. I know what 23 Lbs of HE is capable of.
23 tons is stupendously mind-blowing. Earlier there was a link to a 500#'re could do, and that was about 500 yds away... The videographer said so, and you seen it, it knocked him on his ass.
23 tons of TNT was heard all the way to Syria (without doubt it was heard all over Lebanon).