News for hackers. Stuff that matters.

A comment on At 4.4 miles, Wyoming team sets new rifle shot world record. Parent comment

Re:At 4.4 miles, Wyoming team sets new rifle shot world record by mrb on Saturday September 24, 2022 @12:21AM (#32959710)
Doing the exact math, a 422-grain bullet shot at 3300 feet/sec is 13,833 joules of kinetic energy (.5 * mass * speed*2 = energy)

Right before hitting the target it slowed down to 600 feet/sec, meaning it lost 97% of its kinetic energy during the flight.

[ Parent | on HN ]

There are no comments on this comment yet.