Subject: Re: Amateur audio forensics

...“If the gunman was firing an AR-15-style rifle, the .223-caliber or 5.56-millimeter bullets they use travel at roughly 3,200 feet per second when they leave the weapon’s muzzle,’’ Mr. Harrigan said. “And with a 1/8,000th of a second shutter speed, this would allow the bullet to travel approximately four-tenths of a foot while the shutter is open.” SNIP

Four tenths is ~ 4.8 inches. Looks longer than that in the photo.

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curiosity satisfied. Thanks, Lapsody