What is the fastest or what are some of the faster calibers?

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WonderNine

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Just interested and would like people to list what some of the faster calibers are.

22-250 is pretty fast at 4,000 fps. What are some other really fast ones?
 
Bullet weight is a big factor here;) while some .22-250s will push a 40 gr at 4000-4100, my buddy's won't send a 55gr out over 3700...:scrutiny:

My .220AI once sent a 55gr VMax downrange at 4150fps. Sadly, the bullet arrived in fragments, and I discovered "power depriming..." primer pocket was near as large as the case mouth...:what:
I know a feller that claims 4100+ with a .22-250AI, and there are such things as "fast" & "slow" barrels that factor in, but any of the small bore hotrods will go really fast while the barrel lasts...:cuss:

The bitch is, there is nothing downrange that will ever care that the bullet was moving 200-300 fps quicker...:evil:
Tom
 
define 'really fast'.

the rem ultra mags are fast. w/ light bullets the 243 is fast. the 25-06 is fast.... the list can go on quite a while... need to define the parameters a little more before a focused answer can be given.
 
In this months issue of American Rifleman they have a story on Lazzeroni, and a small insert about his new 7.82 Battlestar. Supposed to push a 150gr bullet at 4000fps. Barrel life of approx 1000rds. That's just insane, but I sure would like to play with one.:D
 
The M829A2 120mm APFSDS-T round for the M1A1 Abrams is said to have a muzzle velocity of around 5900 fps.:what:

That gun isn't actually a rifle, though.
 
In this months issue of American Rifleman they have a story on Lazzeroni, and a small insert about his new 7.82 Battlestar. Supposed to push a 150gr bullet at 4000fps. Barrel life of approx 1000rds. That's just insane, but I sure would like to play with one.
Click to expand...

What good is it if the barrel will only last a day or two? :evil:
 
The fastest I've ever chronoed anything was a .22 CHeetah (.22X.243imp) which did a consistant 4600+fps with 40grain bullets. Bullets left lead vapor trails but still grouped in 1" at 100yds!This is a friends rifle who told me last month he thought the barrel was gone at 3000 rounds as it wont group in 2" anymore!
 
Ackley Improved

22-250 or 6mm Ackley Improved are excellent calibers when using 55 grain B.T. or 58 grain V-max.

One of my favorite varmint loadings = 58 grain V-max - 47.5 grains of Varget - CCI benchrest primer.

This load out of my 6mm Ack Imp runs right at 4000fps.

Excellent crow and coyote load out to 350 yards.

12-34hom.
 
20 Tactical - 33 grain Hornady at 42-4300 FPS in a 24" AR 15.

http://www.sskindustries.com/atlantis/cartridges.html

I saw a custom target rifle that used wildcats that were a .416 case necked down to, I think 7mm, but it might have been .223. I know it was smaller than .30 cal. Just crazy gun. Had a 1 inch stainless 30" barrel and weighted a TON. Easily 30 lbs. Came with reloading dies and brass (would have to).

No claimed velocities but with that long of a barrel and that much powder space you've got a lot of capacity to accelerate. Just as long as the bullet doesn't vaporize once it hits the open air.
 
22 Cheetah is out there along with the 220Swift.

Supposedly, the 22Cheetah is a 308BR necked down to 224 caliber and a small primer pocket, thats a lot of powder for that skinny bullet.

22Cheetah

A kissing cousing to the 22Cheetah is the 22-243 Middlested. Its a 243Win case necked down to 224. Cases are easier to come by with this one.

22-243 Middlested

There was an article in a past issue of Very High Power, where the author talks about the maximum theoretical velocity of a bullet using smokeless propellant. Something around 7000fps is about it. To get more, you need to give the bullet an additional boost as it goes down the barrel. So, if you think about it, 4200fps out of 7000fps is pretty good, thats 60%
 
Ya, to get that 7000 FPS you just need a very long frictionless barrel :D Practicly I hear the max is still over 5000 FPS which is quite impressive. Of course you also need a bullet that won't come apart at those velocities. Something like a shard of steel with a jacket or sabot to save the bore of the gun.
 
In this months issue of American Rifleman they have a story on Lazzeroni, and a small insert about his new 7.82 Battlestar. Supposed to push a 150gr bullet at 4000fps. Barrel life of approx 1000rds. That's just insane, but I sure would like to play with one.
Click to expand...

awesome article :)

i loved it. :cool:
 
Yeah, that Lazzeroni is a card ain't he. And did you get a load of that 12.04 BIBAMUFU. Not that fast, only 2725 fps, but since that's with a 500gr 475 caliber bullet, it ain't too shabby. Makes the 460 weatherby look like a mouse gun. That's one I wouldn't want to play with.
 
In thinking about that M-1 Abrams post, I find myself thinking about rifling in the 4000+ FPS catagory.
I wonder how fast a smoothbore could get in say, 6mm or so?
But then, who makes a fin stabilized bullet in .22 or .243 right? :D
 
Talked to a fellow at the local gunshop today who registers very low on my BS meter about the new .223 WSSM. He said a few people are getting close to the 4600 mark with 40gr bullets.
 
I'll bet the new Win round would do it with a 28-30" barrel for sure. Hmmm maybe I see another varmint rig coming. This will be my last of course. How about a full bull barrel 30" on the Stolle Panda action I got stashed? 6-24x scope in a fiberglass stock in Win .224 SSM! 1in 14" twist should do it . Prolly load 4100 for 50-52 grain bullets and AT LEAST 4400fps for 40 grain V-Max OUCH!!!!!!!!:what:
 
I'll bet the new Win round would do it with a 28-30" barrel for sure. Hmmm maybe I see another varmint rig coming. This will be my last of course. How about a full bull barrel 30" on the Stolle Panda action I got stashed? 6-24x scope in a fiberglass stock in Win .224 SSM! 1in 14" twist should do it . Prolly load 4100 for 50-52 grain bullets and AT LEAST 4400fps for 40 grain V-Max OUCH!!!!!!!!
Click to expand...

i would think the jacket would just rip itself aprat at those speeds.

i could be wrong.
 
.17 Rem
.22-250
.220 Swift
.224 bullets in a .30 sabot, from .308, .30-06, etc.
.308 bullets in a .50 sabot, from 50BMG

All over 4K fps with some bullets.

Plus some wildcats.
 
Not a firearm per se but if velocity of a projectile is the objective, check out the research in rail guns at http://en.wikipedia.org/wiki/Railgun. How about "...Railguns are being researched as weapons with projectiles that do not contain explosives, but are given extremely high velocities: 3,500 m/s (11,500 ft/s, approximately Mach 10 at sea level) or more..." ?
 
.22 Eargesplitten Loudenboomer

Loudenboomer.jpg
 
probably the fastest production cartridge is the .17 Remington. Remington's 20gr. Accu-tip load is rated at 4250fps
 
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