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Discussion in 'General Rifle Discussion' started by cpttango30, Dec 13, 2010.
I want a cartridge that will put a bullet to 5000 FPS. Can it be done?
The fastest thing that I have heard of so far is the .204 Ruger which I believe is cooking along at 4400 FPS, but there may be something out there quicker.
I want 5000+ FPS this would have to be a total wildcat. I am not worried about barrel life at all. Just just want to see what a projectile can do to a varmint at 5000+FPS.
How fast can you push a bullet in a bolt action 22-250. I would have to think either one of those two rounds would be your best bet to start from. I think 5000 FPS would absolutely vaporize anything squirrel sized.
After two minutes of research, I found a couple of rounds that might live up to the bill . . . the 22-243 and the .22 Cheetah. Check those out and see if they are what you are looking for.
I don't think the thin jackets of 22 cal and smaller varmint bullets are going to cut it with that much speed.
Might need a bullet that is tough like a Swift Scirocco II.
Wonder if you could do it with say a 14 cal or even a 10 cal bullet.
10 cal you might be looking at 15 or 20 gr bullets. Not going to be a good windy bucking bullet but I am sure you could neck down a 223 to a 10 cal that would be pushing it right along.
Seems like I read somewhere that the "pressure wave" that is created with smokeless powder is around 5400fps and that it was impossible to achieve any speed above that and VERY difficult to get close. It may even be dangerous to try.....May need to do more research, but I'm pretty sure that there IS a speed limit....
Interesting reading..... http://www.thehighroad.org/showthread.php?t=559484
I don't visit THR. They are a bunch of peter puffing asshats over there.
Maybe we need a new form of propelant like C4.
You need a rail gun...
Tango, if you were to use a barnes 45gr TSX it might get you you speed w/ a .22 wildcat, .22-.243 or CHeetah. I doubt it would pass 4500fps though w/ the CHeetah and 4200 w/ the .22-.243.
Maybe he could just start feeding the gophers some super-duper magnets?
You could neck the 06 case down to .20 or the WSM case down to .22 or .20. You could even neck the 30-378 or the RUM case down to 6mm. Or how about a .220 Swift AI necked down to .17 or .20?
I really want a .14 caliber some day.
The 14 Ackly Hornet looks like a winner to me.
14 Caliber bullets, barrels and reloading supplies
[ame=http://www.youtube.com/watch?v=EZw5oAHUfPw]YouTube - .204 ruger vs gophers[/ame]
Tango, 5000fps with the .204, maybe with a downhill shot, a good tail wind, and in a vacuum.
The thing I worry about is presure. The faster you push something the more pressure it takes.
So Pressure is a big deal I think we need to address.
No your missing the point. I want to devlope a cartridge that will push a bullet to 5000+FPS. It can be a 50bmg necked to 6mm. I don't care what it is or looks like.
Since pressure is the key here, and I am assuming this rifle would be buil on a bolt action, wouldn't your starting point be simply which cartridge could handle the highest chamber pressure, then simply rebarrel it to a light weight varmint round? I would think something odd like an extremely necked down .30-06 or something of that nature.
The problem w/ necking down is it usaully increases pressure as more powder will be used for the smaller projectile. Example: 7mm Rem mag, 61000psi...264 mag 64000psi
¿5000fps .22 Caliber Cartridge? - Shooters Forum
Tango, too late. Go 5500 fps.
Take a visit over at Accurate Handloading - Welcome! , they might be able to help you in what you are looking to do. I think 5000fps is reachable, but it will take time and work. Barrel life will be very short. I have worked with some wildcats approaching 4700fps with a barrel life of only 30 rounds on average in one caliber and about 80 rounds in another. Bullet construction is also a problem at those speeds and rate of twist required to stabilize the bullet. Mid flight blow-ups are common with thin jackets. Good luck.............