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Joined: Jun 2007
Posts: 24,520
Campfire Ranger
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OP
Campfire Ranger
Joined: Jun 2007
Posts: 24,520 |
I got a nice old relaoding manual from BGunn by Phillip Sharpe. He discusses many pioneering concepts of relaoding here is one for Ultra Hi velocity...
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Campfire Ranger
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Campfire Ranger
Joined: Aug 2003
Posts: 17,491 |
I think it was O'Connor who surmised that a BB moving some 12,000 fps would simulate the energy of a standard 180 grain 30-06 load. I don't recall that he thought it was necessarily possible at the time he whote those words however.
Sometimes, the air you 'let in'matters less than the air you 'let out'.
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Joined: Jun 2001
Posts: 32,074
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2001
Posts: 32,074 |
I have a buddy who wants to neck down an office waste paper can to take a needle....
The only true cost of having a dog is its death.
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Joined: Jun 2007
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Campfire Ranger
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OP
Campfire Ranger
Joined: Jun 2007
Posts: 24,520 |
I have a buddy who wants to neck down an office waste paper can to take a needle.... I hope someone is near with a camera when he touches that off. It would be like the monkey trying to put the cork back in from an old playground joke...
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Joined: Feb 2010
Posts: 3,842
Campfire Tracker
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Campfire Tracker
Joined: Feb 2010
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I read the Navy's rail gun only does 8,000fps.
Quando omni flunkus moritati
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Joined: Mar 2006
Posts: 11,663
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2006
Posts: 11,663 |
Broncos are officially the worst team in the nation this year.
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Joined: Nov 2004
Posts: 17,262
Campfire Ranger
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Campfire Ranger
Joined: Nov 2004
Posts: 17,262 |
The main gun on an M1 Abrams is 5,500 ft/s... Half way there..
"I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man." Thomas Jefferson
GeoW, The "Unwoke" ...Let's go Brandon!
"A Well Regulated Militia" Life Member
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Joined: Jun 2005
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Campfire Ranger
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Campfire Ranger
Joined: Jun 2005
Posts: 27,500 |
A friend of mine gave me a tank round off of whatever tanks he was playing with on one of his reserve weekends. I think it is a 37mm, but I am no expert on tank ammo.
Its bullet is deeply relieved and made of some sort of Aluminum alloy. Probably pretty darned fast, I am guessing.
LOVE God, LOVE your family, LOVE your country, LIKE guns and sports.
About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500
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Joined: Jun 2001
Posts: 32,074
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2001
Posts: 32,074 |
I have a buddy who wants to neck down an office waste paper can to take a needle.... I hope someone is near with a camera when he touches that off. It would be like the monkey trying to put the cork back in from an old playground joke... I think he was joking, to make a statement... Well, maybe....
The only true cost of having a dog is its death.
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Joined: Jan 2004
Posts: 3,168
Campfire Tracker
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Campfire Tracker
Joined: Jan 2004
Posts: 3,168 |
I read somewhere that somewhere in the 5000fps range is the maximum that can be achieved with gun powder because thats as fast as the powder burns and the gas expands. Rail guns don't use powder but electricity IIRC.
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Joined: Jun 2001
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2001
Posts: 32,074 |
The main gun on an M1 Abrams is 5,500 ft/s... Half way there.. So - just neck that sucker down to a .30 cal TTSX....
The only true cost of having a dog is its death.
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Joined: Nov 2004
Posts: 17,262
Campfire Ranger
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Campfire Ranger
Joined: Nov 2004
Posts: 17,262 |
"I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man." Thomas Jefferson
GeoW, The "Unwoke" ...Let's go Brandon!
"A Well Regulated Militia" Life Member
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Joined: Oct 2003
Posts: 2,509
Campfire Regular
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Campfire Regular
Joined: Oct 2003
Posts: 2,509 |
2 shots from my 222 mag has a combined velocity of nearly 8,000 fps. No centerfire will outdo that...
Now imagine the possibilities !!!!! X3 or 4 !! Glad you like the book !! It's a fun read. Check out the .357 Mag. pistol, it's TOO POWERFUL , and to dangerous to reload We could always "Hollow-Point" that penny too!
Old Fishermen never die, we just get reel tired.
May you build a ladder to the stars and climb on every rung. May you stay......Forever young
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Joined: Oct 2011
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Campfire Regular
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Campfire Regular
Joined: Oct 2011
Posts: 1,935 |
Small 2-stage light-gas guns can reach 10km/s, or 32810 ft/s. No typo, almost 33 thousand feet per second. I suspect the record is now a bit more.
I ran a larger one, 38mm bore, for much of my professional career. Fastest I remember shooting was about a 40 gram slug of plastic at about 5km/s, about 16000 ft/s. (a 40 gram slug of plastic isn't much in a 38mm bore.) 10000 ft/s was a virtual piece of cake.
Before you go to calling bs on me, google up 2-stage light-gas gun.
-Gun Doc
Clinging to guns & religion since 1959
Keyboards make people braver than alcohol
Election Integrity is more important than Election Convenience
Washington Post: "Democracy Dies in Darkness" More correct: "Killing Democracy Faster Than Darkness"
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Joined: Apr 2001
Posts: 12,895
Campfire Outfitter
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Campfire Outfitter
Joined: Apr 2001
Posts: 12,895 |
A friend of mine gave me a tank round off of whatever tanks he was playing with on one of his reserve weekends. I think it is a 37mm, but I am no expert on tank ammo.
Its bullet is deeply relieved and made of some sort of Aluminum alloy. Probably pretty darned fast, I am guessing. The 37mm hasn't been used as a main armourment on American tanks since WW2 and even then it was obsolete.. Not sure what calibre of the penetrator is in todays 120mm tank shells, but they are made from something a little harder than aluminium alloy!
Last edited by Pete E; 04/28/15.
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Joined: Jun 2007
Posts: 24,520
Campfire Ranger
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OP
Campfire Ranger
Joined: Jun 2007
Posts: 24,520 |
A friend of mine gave me a tank round off of whatever tanks he was playing with on one of his reserve weekends. I think it is a 37mm, but I am no expert on tank ammo.
Its bullet is deeply relieved and made of some sort of Aluminum alloy. Probably pretty darned fast, I am guessing. The 37mm hasn't been used as a main armourment on American tanks since WW2 and even then it was obsolete.. Not sure what calibre of the penetrator is in todays 120mm tank shells, but they are made from something a little harder than aluminium alloy! Depleted Uranium...
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Joined: Nov 2009
Posts: 15,884
Campfire Ranger
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Campfire Ranger
Joined: Nov 2009
Posts: 15,884 |
Small 2-stage light-gas guns can reach 10km/s, or 32810 ft/s. No typo, almost 33 thousand feet per second. I suspect the record is now a bit more.
I ran a larger one, 38mm bore, for much of my professional career. Fastest I remember shooting was about a 40 gram slug of plastic at about 5km/s, about 16000 ft/s. (a 40 gram slug of plastic isn't much in a 38mm bore.) 10000 ft/s was a virtual piece of cake.
Before you go to calling bs on me, google up 2-stage light-gas gun.
-Gun Doc Article I read said velocities from 5,000 fps to 33,000 fps... that thing has got some 'gitty-up'.
Old Turd- Deplorable- Unrepentant Murderer- Domestic Violent Extremist
Just "Campfire Riffraff and Trash"
This will be my last post! Flave 1/3/21
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Joined: Apr 2001
Posts: 12,895
Campfire Outfitter
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Campfire Outfitter
Joined: Apr 2001
Posts: 12,895 |
Which is a wee bit harder than aluminium alloy!
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Joined: Oct 2011
Posts: 1,935
Campfire Regular
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Campfire Regular
Joined: Oct 2011
Posts: 1,935 |
Tungsten is also used. At those impact velocities hardness is fine, but density is more important. Both Tungsten and Uranium are quite dense.
Clinging to guns & religion since 1959
Keyboards make people braver than alcohol
Election Integrity is more important than Election Convenience
Washington Post: "Democracy Dies in Darkness" More correct: "Killing Democracy Faster Than Darkness"
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Joined: Oct 2008
Posts: 18,163
Campfire Ranger
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Campfire Ranger
Joined: Oct 2008
Posts: 18,163 |
The Ames Vertical Gun Range (AVGR) was designed to conduct scientific studies of lunar impact processes in support of the Apollo missions. In 1979, it was established as a National Facility, funded through the Planetary Geology and Geophysics Program. In 1995, increased scientific needs across various disciplines resulted in joint core funding by three different science programs at NASA Headquarters (Planetary Geology and Geophysics, Exobiology, and Solar System Origins). In addition, the AVGR provides programmatic support for various proposed and ongoing planetary missions (e.g. Stardust, Deep Impact). Using its 0.30 cal light-gas gun and powder gun, the AVGR can launch projectiles to velocities ranging from 0.5 to nearly 7 km/sec. By varying the gun’s angle of elevation with respect to the target vacuum chamber, impact angles from 0° to 90° relative to the gravitational vector are possible. This unique feature is extremely important in the study of crater formation processes. Many projectile types including spheres, cylinders, irregular shapes, and clusters of small particles can be launched. They can be metallic (aluminum, copper, iron), mineral (quartz, basalt), or glass (Pyrex, soda-lime). Soda-lime spheres, for example, can be launched individually (for sizes ranging from 1.5 to 6.4mm diameter - 1/16 to 1/4 inch), in groups of three (0.2 to 1.2mm), or as a cluster of many particles (2 to 200-?m). The target chamber is approximately 2.5 meters in diameter and height and can accommodate a wide variety of targets and mounting fixtures. It can maintain vacuum levels below 0.03 torr, or can be back filled with various gases to simulate different planetary atmospheres. Impact events are typically recorded with high-speed video/film, or Particle Image Velocimetry (PIV). The Facility uses the same arsenal of light-gas and powder guns as the HFFAF to accelerate particles that range in size from 3.2mm to 25.4mm (1/8 to 1 inch) diameter to velocities ranging from 0.5 to 8.5 km/s (1,500 to 28,000 ft/s).
TRUMP- GABBARD 2024
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