Posted on 03/30/2021 12:12:35 PM PDT by DUMBGRUNT
The story behind Ryan Cheney’s record 4,134-yard shot
He hit a plate at 3,592 yards—which itself was a record hit for a .33-caliber projectile—but then managed to drop a shot on a piece of 6-foot by 6-foot steel at 4,134 yards, which is 2.35 miles.
I had dialed all the elevation in my scope, 33 mils above my zero, and had an extra 35 mils thanks to the prism. Even so, I was holding 10 mils over the target, for a total of 78 mils of elevation. [Editor’s note: At 1,000 yards, this puts the shot more than 200 feet above the ground.]
Time of flight: 9.4 seconds to 4,137 yards
(Excerpt) Read more at outdoorlife.com ...
Some more than others
I guess I could calculate it if I wasn’t so lazy, but if your shot takes 9 seconds to reach it’s target, among all the other corrections you’re dialing in, do you have to take the rotation of the earth into consideration? Or in other words, is that a tougher shot if you’re shooting North or South, rather than due East or due West? (Not to be confused with a little village in South Carolina).
“So just how do you know that there’s no one walking around in the 2+ mile trip?”
Because they’d have to be pretty tall to get hit, except if they’re close to the target.
You very much have to take the Coriolis Effect into consideration, even at 1000 yard shots shooting NS vs. EW can make a noticeable difference. It’s all depending on how close to the poles you are as well.
And do not over lool the Eotvos effect!
If the bullet is shot west, the shots hit low. The reason behind it is that when you’re firing east, in the direction of the Earth’s rotation, the target has time to move during the flight time below what the aiming point was, so the hit is at the top.
And yes I always check before I workout on my personal 15-meter indoor range.
Free app and explaination here:
https://www.lapua.com/ballistics-app-tips-the-coriolis-effect/
Ballistic path like a rainbow. Must have been going nearly vertical at the end.
Our daughter dates a young Lieutenant right now who is an engineer and a ballistics expert. His job is to test and calculate precision rounds at long distances. I will have to put this in front of him.
Is it, could it, lethal at that range. I am sure the energy in that bullet puts it almost in free fall.
Reminds of the scene in Tora Tora Tora when Admiral Husband E Kimmel gets hit by the spent Jap bullet.
I wonder if the target was upright, or inclined backwards.
As much as a .380 at the muzzle.
Big deal - the Germans fired monster shells 12 miles high and 67 miles away to hit Paris in WW1.
Urban Legend about a three-shot accuracy test of the Brown Bess:
"One went high, one went low, and where in hell did the other one go?"
That is a nice shot but a 6’ x 6’ plate is relatively large target. I’d like to see that shot on a human 6’x 3’? target to test sniper skills.
I’m not knocking the guy. It was an amazing shot.
Reading about the ballistics calculations for the biggest battleship guns. They had to take into account the very thin air at the apogee when shooting max elevation. Drastically reduced drag extended the range.
Pretty wild when you think about it. Regular rifle ballistics gets weird when the BC changes with velocity.
Always be real nice to Ryan Cheney.
Good grief, that scope alone is $3800.
I enjoy the "milk jug challenge" videos where a shooter gives it a whirl with iron sights. That's "only" 1,000 yards, but still - there's a guy with an unmodified Swiss K-31 rifle that has made a few jaws drop.
The USS New Jersey museum ship's curator has some interesting videos about the fire control computer - and the many ways that data was input. Fascinating stuff.
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