AR15.Com Archives
 New .50 bmg variant.....
molardog  [Team Member]
7/12/2011 8:53:27 PM
What ya'll think?



Wonder how this would chrono?

RyJones  [Team Member]
7/12/2011 9:07:26 PM
is that 17 headhunter?
Xringlover  [Member]
7/12/2011 9:43:04 PM
Originally Posted By molardog:
What ya'll think?

http://i339.photobucket.com/albums/n469/molardog/Snapbucket/9c687781-orig.jpg

Wonder how this would chrono?



All I can come up with is a vapor trail between the muzzle and chrony!!
Nothing left between the muzzle and target!
molardog  [Team Member]
7/12/2011 10:04:06 PM
Originally Posted By RyJones:
is that 17 headhunter?


I think someone called it 5.7 Express......seems like "express" would be putting it mildly. Anyways, I'm sure most have seen this before but thought I'd share for hilarity.
muddawggin  [Team Member]
7/12/2011 11:11:07 PM
I think that would be faster than the speed of light for exactly one second.
Crazy_Harry  [Member]
7/13/2011 12:11:19 AM
I hearby dub this the .223 Warp 9. Barrel life is 5 rounds
Husky79  [Team Member]
7/13/2011 2:54:13 AM
well when you pull the trigger, you would be thinking WOW i could see the trail all the way to the target. Then you realize the gun is looking funny, and look at it seeing that the barrel is gone. The barrel went to the target! lol
ARsR4ME  [Member]
7/13/2011 12:44:07 PM
Being how the fastest gunpowder burns at 5,500 fps I would say no faster than 5,000 fps if it could really be done. I'm waiting for faster gunpowders or.....a soild fuel?????. Slow TNT is 7,000 fps, just a dab will do ya.
ridurall  [Member]
7/13/2011 6:23:57 PM
I remember years ago when Guns Magazine expermented with a .22 Eargensplitinloudinboomer (Sp) trying to get 6000 FPS but it burned out the throat before they ever reached the velocity they wanted.
Max-Paul  [Team Member]
7/13/2011 10:35:37 PM
Can we just call it the Plasma blower?
TeamFerret  [Member]
7/13/2011 10:40:15 PM
Long long ago there was an article in VHP by a guy named Michael Vair (not sure on the spelling). If I remember correctly, he took the 50BMG up to 7500fps (Military project). Impacts were on 3/4" armor plate. The impact photos were published and they showed the progression of damage through the velocity range. He stopped by my shop a few years back and gave me one of the plates, an impact of a M33 projectile at 4500fps. A golf ball almost passes though the hole.

We talked a little about the project because I was curious. According to him, when velocity went above 5500fps, the throat would start to spal in about 20 rounds. Above 6500fps, parts of the lands would follow the bullet out of the barrel. At 7500fps, the barrel would come apart from the inside and would fail on the first shot. Not a barrel rupture though, the gun and barrel were designed for this project at something like 200K psi.

Im sure someone wants to see a pic so Ill try to take one tomorrow. Feel free to call and remind me.

Dave
Ferret50
50cal  [Team Member]
7/13/2011 10:46:37 PM
Somewhere in my gun junk I have a 50BMG casing that I kept necking down to accept a .223 V-Max bullet. Had to anneal the neck a few times and turn it and ream the inside of the neck because of the swaging process.

I need to dig it out. It's in with a bunch of my collectable .50 rounds.
ARsR4ME  [Member]
7/14/2011 2:15:37 AM
Originally Posted By TeamFerret:
Long long ago there was an article in VHP by a guy named Michael Vair (not sure on the spelling). If I remember correctly, he took the 50BMG up to 7500fps (Military project). Impacts were on 3/4" armor plate. The impact photos were published and they showed the progression of damage through the velocity range. He stopped by my shop a few years back and gave me one of the plates, an impact of a M33 projectile at 4500fps. A golf ball almost passes though the hole.

We talked a little about the project because I was curious. According to him, when velocity went above 5500fps, the throat would start to spal in about 20 rounds. Above 6500fps, parts of the lands would follow the bullet out of the barrel. At 7500fps, the barrel would come apart from the inside and would fail on the first shot. Not a barrel rupture though, the gun and barrel were designed for this project at something like 200K psi.

Im sure someone wants to see a pic so Ill try to take one tomorrow. Feel free to call and remind me.

Dave
Ferret50


How coud someone push a bullet faster than the powder burns?
imtheflash  [Team Member]
7/14/2011 9:17:34 AM
Cool pic, been a few years since I've seen it.
Bretshooter  [Member]
7/14/2011 9:47:34 AM
Originally Posted By ARsR4ME:
Originally Posted By TeamFerret:
Long long ago there was an article in VHP by a guy named Michael Vair (not sure on the spelling). If I remember correctly, he took the 50BMG up to 7500fps (Military project). Impacts were on 3/4" armor plate. The impact photos were published and they showed the progression of damage through the velocity range. He stopped by my shop a few years back and gave me one of the plates, an impact of a M33 projectile at 4500fps. A golf ball almost passes though the hole.

We talked a little about the project because I was curious. According to him, when velocity went above 5500fps, the throat would start to spal in about 20 rounds. Above 6500fps, parts of the lands would follow the bullet out of the barrel. At 7500fps, the barrel would come apart from the inside and would fail on the first shot. Not a barrel rupture though, the gun and barrel were designed for this project at something like 200K psi.

Im sure someone wants to see a pic so Ill try to take one tomorrow. Feel free to call and remind me.

Dave
Ferret50


How coud someone push a bullet faster than the powder burns?


Gas expansion is far faster than the burn rate of the powder.
molardog  [Team Member]
7/14/2011 10:22:29 AM
Originally Posted By TeamFerret:
Long long ago there was an article in VHP by a guy named Michael Vair (not sure on the spelling). If I remember correctly, he took the 50BMG up to 7500fps (Military project). Impacts were on 3/4" armor plate. The impact photos were published and they showed the progression of damage through the velocity range. He stopped by my shop a few years back and gave me one of the plates, an impact of a M33 projectile at 4500fps. A golf ball almost passes though the hole.

We talked a little about the project because I was curious. According to him, when velocity went above 5500fps, the throat would start to spal in about 20 rounds. Above 6500fps, parts of the lands would follow the bullet out of the barrel. At 7500fps, the barrel would come apart from the inside and would fail on the first shot. Not a barrel rupture though, the gun and barrel were designed for this project at something like 200K psi.

Im sure someone wants to see a pic so Ill try to take one tomorrow. Feel free to call and remind me.

Dave
Ferret50


Awesome info.....

How big would the case need to be made to get 7500 fps out of a M33 projo?
MP15T  [Team Member]
7/14/2011 10:26:15 AM
tag for pics
TeamFerret  [Member]
7/14/2011 1:06:23 PM
MP15T  [Team Member]
7/14/2011 1:16:00 PM



lghjr  [Member]
7/19/2011 11:00:59 AM
Originally Posted By ARsR4ME:
Being how the fastest gunpowder burns at 5,500 fps I would say no faster than 5,000 fps if it could really be done. I'm waiting for faster gunpowders or.....a soild fuel?????. Slow TNT is 7,000 fps, just a dab will do ya.


TNT = 7000 mps