Well, according to these guys it's one minute and 50 seconds. Science....don't cha know! This is admittedly a bit silly (and dangerous), but I got kind of a kick out of these two. I'm glad that they didn't get hit!


https://www.youtube.com/watch?v=IY7jZia2dXQ

Hard to believe it came down close enough to hear it. It didn't appear he had any kind of level on the rifle to make sure it was perfectly vertical.

Useless in the sense that it doesn't have to be 50BMG, as it would be about the same length of time for anything traveling at about the same speed (2700-ish fps)? There would be small changes for BC, and terminal velocity.

660gr does make more noise hitting the ground.

He was using a level held against the gun. You can see it laying on the table at the start of the video.

The rotation of the earth would have an effect on it. Stupid move anyway you look at it.

Barometric pressure, relative humidity, temperature and elevation, too, if you really want to split hairs.

Sounds like he hired someone from the Home Depot parking lot.

I'm ready

are you ready?

I'm ready.

quote:

Originally posted by Johnny 3eagles:
I'm ready

are you ready?

I'm ready.

"What?"

Blackmore,

All such considerations come into view when sniping far, far away.

Especially Coriolis effect.

quote:

Originally posted by LS1 GTO:
Sounds like he hired someone from the Home Depot parking lot.

Actually, I never wondered.

I do find it entertaining when someone who clearly has no training or expertise prefaces the video by saying "This is dangerous, don't try this at home".

I guess it sounds better than "This is pro'bly crazy and dangerous, so ya'll pro'bly shouldn't go and try it."

Oh, and running for cover in a panic after you do it is a clear indicator that you probably don't know what you're doing.

Back when I was a student in ME the physics part taught me how to calculate max height using a formula.

Knowing time from firing to return at impact you can calculate initial velocity, FPS and maximum height achieved.

I took my Nylon 66 firing Long Rifle 22's and determine these variables. Fired using a bubble balance on barrel to get it slightly off center so as not to hit myself or lake cabin.

Fired from shore at lake where we had a cabin on a very still morning. You could here bullet splash down and using a Ironman watch stopwatch came up with an accurate number for initial v and max H.

Lot of fun at the time to use dry classroom formula to produce interesting numbers.

quote:

Originally posted by Hangtime:
Back when I was a student in ME the physics part taught me how to calculate max height using a formula.

Knowing time from firing to return at impact you can calculate initial velocity, FPS and maximum height achieved.

I took my Nylon 66 firing Long Rifle 22's and determine these variables. Fired using a bubble balance on barrel to get it slightly off center so as not to hit myself or lake cabin.

Fired from shore at lake where we had a cabin on a very still morning. You could here bullet splash down and using a Ironman watch stopwatch came up with an accurate number for initial v and max H.

Lot of fun at the time to use dry classroom formula to produce interesting numbers.

We did it with water rockets in HS physics.

One thing that video did teach us is that a 50 BMG is unstable at terminal velocity.

Terminal velocity according to the wicked pedia ...

https://en.m.wikipedia.org/wiki/Terminal_velocity

Higher speeds can be attained if the skydiver pulls in his or her limbs (see also freeflying). In this case, the terminal velocity increases to about 320 km/h (200 mph or 90 m/s),[2] which is almost the terminal velocity of the peregrine falcon diving down on its prey.[3] The same terminal velocity is reached for a typical .30-06 bullet dropping downwards—when it is returning to the ground having been fired upwards, or dropped from a tower—according to a 1920 U.S. Army Ordnance study.[4]

Back in the day...when I repelled off the top of Omni International Hotel in Atlanta...I would have made the same bloody splat if I had repelled off the top of the Peachtree Plaza (which was way scarier at the time when I looked over )...if I had run the rope through my "rack" in the improper sequence

There was an episode of Mythbusters where it proved that a bullet that is shot straight up will not be lethal as it loses ballistic trajectory, stalls, and falls at terminal velocity. However, that was a pistol round I think, not something with the mass of .50 BMG, and it wasn't AN INCENDIARY ROUND!

Did they say they were hiding under their car too? I wonder how you explain that to your insurance company.

If you're not running to get under some cover wouldn't it be safer to stand right next to the gun.

Isn't the chanced of it going up and coming down exactly in the same spot worse than moving.

Dumb move either way but also cool to see the results.

quote:

Ever wonder how long it takes a .50 cal. bullet to come back to earth if it's shot straight up?

Nope.

But this one came back fast when shot at steel!

quote:

Originally posted by 1s1k:
If you're not running to get under some cover wouldn't it be safer to stand right next to the gun.

Isn't the chanced of it going up and coming down exactly in the same spot worse than moving.

Dumb move either way but also cool to see the results.

This was my thought, safest place would most likely be right next to the gun. I think they used the incendiary round for sound, but I definitely would not want to be where it lands, even if under a car.