New World Record Set for Farthest Long-Range Rifle Shot: 4.4 Miles

skwerl said:
What would be the equivalent distance shooting a .22lr w/ 20'' bbl ?

Any Physicists ?
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Don't need physicists, check this out it's about a 4 to 1 ratio to equate a .308 round in terms of projcetile trajectory

https://finnaccuracy.com/blogs/fa-news/22lr-long-range-trainer-how-to-get-best-out-of-it

So 1000m with .308 shot is .22lr @ 250m. However since they used a different round and at such extended range, you will have to play arond with the XLS to get something close to that.

Lot of ELR .22lr guys are shooting like 600-800 yards, the main limitation at that point after getting gucci gun and all, is the ammo.

You can't load your own and commercial ammo isn't there yet for SUPER elr ...

See vudoos video series on this
 
Beeron said:
I would Be interested to know as well.
Math required………
In order to make this calculation, need to knows include:
Weight, BC, and muzzle velocity of projectile used

BP and weather info as well as elevation of gun and target.

For the 22lr. Barrel length is not relevant.
What is relevant is again Weight, BC, and MV of the round (most march 22 has similar BC i believe but there is Massive variability among available choices here).
Hypothetical environmental conditions including weather, pressure, and elevation.
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See my post above this reply.

Vudoo tested this and anything past 16" does nothing for .22lr in terms of mv
 
Evil_Edie said:
I honestly don't care how many rounds it took to get there, but he only hit it once and called it a day. Only counts if you hit it twice IMO. With only 1 hit for all we know his dope was still off and he flinched it onto the plate.

Still impressive don't get me wrong. Even just being in the ball park at that range is amazing. Just confirm it with a second shot is all I'm saying.
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It doesn't really matter, with todays ballistic calculators and truing, all the elevation holds are known. You really are just gambling with wind (no device to measure that to that distance yet), and ammo consistency ...
 
chanrobi said:
It doesn't really matter, with todays ballistic calculators and truing, all the elevation holds are known. You really are just gambling with wind (no device to measure that to that distance yet), and ammo consistency ...
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And atmospheric refraction
Air temperature over flight path
Air currents over flight path
Spin of the earth
Trans-sonic barrier
And a number of other external ballistics factors that come into play .
 
What ballistics tables don't show is the spin rate (RPM) of the bullet at various distances. Gyroscopic Stability depends on sufficient bullet spin - too low and bullets tumble, and their path becomes unpredictable. That's the physics behind the baseball knuckleball - no one, not the pitcher, catcher or batter can predict where it will cross the plate.

The reason it's not shown in tables is that the spin rate slows much less than bullet velocity, so for any useful distance, the bullet will fall to the ground before it becomes unstable, unless of course it was only marginally stable at the barrel muzzle.

With the Barrett's 422 gr 0.416" bullet out of a 1:9 twist, it is very stable - so much so that those who believe in "over stabilization" would call it such. Even with a MV of 3300 fps (!) it was only estimated to be travelling at 689 fps at 4.4 miles (about 20% of its starting velocity), but its spin rate would have been perhaps at 80%.

So for the 22LR, unless your barrel twist rate was about 1:16 or faster, the bullet would tumble before it fell to the ground.
 
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Andy said:
What ballistics tables don't show is the spin rate (RPM) of the bullet at various distances. Gyroscopic Stability depends on sufficient bullet spin - too low and bullets tumble, and their path becomes unpredictable. That's the physics behind the baseball curveball - no one, not the pitcher, catcher or batter can predict where it will cross the plate.

The reason it's not shown in tables is that the spin rate slows much less than bullet velocity, so for any useful distance, the bullet will fall to the ground before it becomes unstable, unless of course it was only marginally stable at the barrel muzzle.

With the Barrett's 422 gr 0.416" bullet out of a 1:9 twist, it is very stable - so much so that those who believe in "over stabilization" would call it such. Even with a MV of 3300 fps (!) it was only estimated to be travelling at 689 fps at 4.4 miles (about 20% of its starting velocity), but its spin rate would have been perhaps at 80%.

So for the 22LR, unless your barrel twist rate was about 1:16 or faster, the bullet would tumble before it fell to the ground.
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Beeron said:
I guess you missed the 9 pages of discussion as to why your AWE is misplaced?

I'm glad this thread is back though. I have been doing some research and it turns out that every New Years in Mexico, many drunken revelers accomplish similar feats when they shoot guns into the air at random angles.

Apparently, some of these bullets travel great distances and occasionally hit things! And that's drunk!, in the Dark!

Someone call Guiness
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lol I like this take.
 
Beeron said:
I guess you missed the 9 pages of discussion as to why your AWE is misplaced?

I'm glad this thread is back though. I have been doing some research and it turns out that every New Years in Mexico, many drunken revelers accomplish similar feats when they shoot guns into the air at random angles.

Apparently, some of these bullets travel great distances and occasionally hit things! And that's drunk!, in the Dark!

Someone call Guiness
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Over here being a miserable knob as well eh. You must be fun at parties Beeron :)
 
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