Fastest flattest screaming SOB

[Diablo]

I know its an old thread but just thought i'd throw into the pot , I have a 220 swift that pushes the 52g A-max around 4,057 ft/sec av which drops around 5.5 inches at 300 yards when zeroed at 100 yards but i wanted to see how fast i could push the velocity issue without giving anything away to the wind . So i went with a WSM case and a 55g Nosler Bal tip in 6mm which looks as if your sitting a bullet on a dustbin !
I got to 4,300 ft/sec with Norma brass and R15 and 4,400 ft/sec with Winchester brass but the moment i switched to R17 and Winchester brass she hit a sweet spot at 4,530 ft/sec which i stuck with and she drops approx 2.75 inches at 300 yards .
Hope this was of interest to any velocity monsters out there !

Thanks for that.

Been thinking about the 6mm WSM, but with a 1-7.5 twist for DTACs. Might be better off building the 6mm Atlas (.264 Win Mag case), but the WSM case seems more interesting.

 

[mallrat]

Anybody neck a 50 BMG case down to .22? How 'bout .17? 20mm down to either of those? That'll get the WTF factor right there.

 

[Wyfox]

204 Ruger, I've killed a couple hundred coyotes and and many other vermin with one.
224 TTH(Texas Trophy Hunter) would be my second choice with the criteria given.

 

[clayne_b]

22 tejas, But I think its a long action... sounds fun as hell!

 

[scudzuki]

Funny, people are still posting answers to the original nearly 2 year old question.
The OP has probably been through his first barrel already!

7GRT, that 52 grain bullet is fookin' MOVING!

That reminds me, I have a set of .220 Swift RCBS dies if anyone is looking...

Please somebody buy them so I'm not tempted to build another rifle...

Joe

 

[krw]

Vanilla .243 will run the 55gr nosler BT at 4000fps but do not try to run that in a fast twist. It did not survive a 1-7.5 and I had the only .243 shotgun on the ranch that day.

LMAO!!! Now that's a hoot!

 

[long range newbie]

+1 on 204, or 223AI for heavier bullets, maybe even 22br if you want to keep the same bolt face. Hey do you know if a 22-204 will feed in ai 223 mags with heavier bullets?

 

[7GRT]

The swift has had over 1000 rounds now , cases are Norma and the 300 are on their fourth loading . Velocity varies between 4,015 ft/sec to 4,050 ft/sec depending on powder batch of R15 .
I have a 6x284mm which runs the 115g D-Tac at 3,270 ft/sec and would easily push 3,400 ft/sec if required .
The reason for the 6mm WSM was to give a huge advantage over my swift without giving anything up to wind which is the trade off in using the lighter bullets . It was only ever intended to be used as a lamping rifle out to 400 yards .
I don't see any point in going AI on this type of barrel , the swift would of given me another 100 ft/sec , big deal , not worth the fire forming & 243 AI , why ? Just get a 6x284mm and have more legs .

 

[mallrat]

People like velocity.

 

[mallrat]

Funny, people are still posting answers to the original nearly 2 year old question.
The OP has probably been through his first barrel already!

7GRT, that 52 grain bullet is fookin' MOVING!

That reminds me, I have a set of .220 Swift RCBS dies if anyone is looking...

Please somebody buy them so I'm not tempted to build another rifle...

Joe

Now that he's through his first barrel, maybe he's looking for something different. A little more "out there". Like I said people like velocity, and they want to add to the conversation. Even if, like me, they don't have much to add.

 

[DAVETOOLEY]

17-224 Weatherby. 30 grainers @4300. No recoil. I can watch the vapor trail behind the bullet in the scope. Zero- Dead on at 100 yds. and it's dead on at 200. Flattest shooting SOB I've ever built out about 400 yds. The only draw back is after 10 rounds you have to clean the barrel or you start losing bullets.

 

[skeetlee]

I like daves suggestion as those 17cal pills are pretty freakin cool. If you want to stay with a 22cal a plain old 22BR will do everything a 22-250 will do with a hell of a lot less powder, and that means a ton more barrel life. I dont know why more folks dont think of the 22BR it makes tons of since!!! So here is my vote-

22BR
22-250AI
Or any 17cal.

 

[my human host]

I have a .17Predator (17-223 Improved) built by Greg Tannel that runs a 30gr Gold@ 4100. Supremely accurate, zero recoil, and it locks up coyotes pretty good.

That said, a straight necked down 17-204 will do that speed, easily, with less loading chores.
My friend Kerry went a step further & ran a .17Predator reamer deep to utilize .204 case length and he got 4500+ with the same 30gr Kindler Golds! Calls it the 17WCH (Western Coyote Hunter) Honest to goodness hold on fur 400yds coyote rifle. Run the ballistics with a .27 G1 BC! A 20-250AI would be simlar, I'd imagine...

But my latest "pisser" rifle has been a straight .22-243 Win with a fast twist (1:7.7") Krieger. 75Amaxs @ 3500+, stupid accurate, cake to load for with Lapua brass/bushing die, and no fireforming. Been ringing my steel coyote beyond 900yds with it, while still on the 1st turn of the ele. turret. Wicked chuck rifle, and will get some coyote action this fall/winter...

Also, kilt a deer with a 70gr TSX, blowed right on thru the both shoulder blades. This .22-243 is more fun than my GAP .243 was, and that rifle was a hammer. Sold it, and hardly miss it, cuz this .22-243 is simplistic badazzery...

Knockemdown knows how it's done. I'll never be without one or two 22-243's. Brass is easy to make and it seems to love being pushed hard. I did the 22-250AI for several years... don't see myself going back.

 

[KYS]

22 Creedmoor

Developed by George Gardner, Copper Creek and myself. It started life as a joke amongst us trying to figure out a fun, flat, range gun. Simply neck down 6mm Creedmoor brass and run a 75gr AMAX with Hybrid 100V powder.
My most accurate load with a middle of the pack charge on the ladder test. I am getting 3415 fps with a suppressor, 3400 without. 4 mils to 800 yards on a 100 yard zero. I am approaching 1k rounds fired and the barrel still looks to be barely shot.

We haven't even tried other bullets because our initial loads were so impressive in speeds and accuracy. I run a Bartlein gain twist barrel finished at 26" and threaded for my suppressor.

 

[Adam B]

22 Creedmoor

Developed by George Gardner, Copper Creek and myself. It started life as a joke amongst us trying to figure out a fun, flat, range gun. Simply neck down 6mm Creedmoor brass and run a 75gr AMAX with Hybrid 100V powder.
My most accurate load with a middle of the pack charge on the ladder test. I am getting 3415 fps with a suppressor, 3400 without. 4 mils to 800 yards on a 100 yard zero. I am approaching 1k rounds fired and the barrel still looks to be barely shot.

We haven't even tried other bullets because our initial loads were so impressive in speeds and accuracy. I run a Bartlein gain twist barrel finished at 26" and threaded for my suppressor.

I wonder how it would do with a 90gr Berger?

 

[Tyler Kemp]

If he wants different, flat, and awesome, how about a 20BR? I've always wanted to try one with heavy 20 caliber bullets. Should be close to no recoil and still be able to reach quite a ways on smaller game.

 

[KYS]

I wonder how it would do with a 90gr Berger?

You are probably reaching the limits of the barrel twist I have. 90gr would be pushing its performance to accuracy ratio.
When considering a 90gr pill, just go to a 223AI and throat it for a generous OAL. That's what I did and it shoots great.

 

[Tyler Kemp]

90gr would be pushing its performance to accuracy ratio.
When considering a 90gr pill, just go to a 223AI and throat it for a generous OAL.

What do you mean here? I don't see why when set up for a 90gr bullet it wouldn't be better at longer ranges than a lighter bullet?

 

[KYS]

What do you mean here? I don't see why when set up for a 90gr bullet it wouldn't be better at longer ranges than a lighter bullet?

The twist rate of the barrel may not stabilize the 90gr bullet. We haven't tested it. We reached the goals we wanted with the 75gr bullets.

 

[Sendero_Man]

pics KYS ? sounds sexy

 

[Adam B]

given the proper barrel twist I would imagine that a 22 creedmoor would be great with a 90 grain bullet. A 223ai has no where near the case capacity the creedmoor has so shooting a 90 grain bullet in it would seem pointless even though you do it, I would reserve that for a 22-250ai or something that has a little more powder capacity in it to push it faster.

 

[Jimmy Hog]

243 ackley improved
70 grain nobler ballistic tip
52.5 grains superformance
CCI large rifle
26" tube 1:10
3845 fps
That's moving for a 70 grain pill.

 

[KYS]

given the proper barrel twist I would imagine that a 22 creedmoor would be great with a 90 grain bullet. A 223ai has no where near the case capacity the creedmoor has so shooting a 90 grain bullet in it would seem pointless even though you do it, I would reserve that for a 22-250ai or something that has a little more powder capacity in it to push it faster.

There is no need to push it faster. At 2750 its a 1200 yard gun, easily. 223AI has plenty of capacity, thats what you've improved it......

 

[KYS]

pics KYS ? sounds sexy

The rifle or the cartridge?

 

[KYS]

6.5 Creedmoor - 6mm Creedmoor - 22 Creedmoor

And the rifle:

 

[MosesTheTank]

My vote is for the 22-250. Fast, flat, and good factory stuff available. Although guys have thrown out several others that fit your bill. But if he really wants the "WTF was that?!?" factor I say find a smith who will work you up an Eargesplitten, and someone who will work up your loads (someone who has an underground reloading bunker far from any population center). And then your buddy might call Zack over at TBAC to see what kind of can might be constructed... I imagine maybe the 338P-1 with a 22 bore. I would love to see that.

 

[MosesTheTank]

The rifle or the cartridge?

He meant plural KY, as in the lubricant

 

[7GRT]

223 AI shooting a 90g'er is probably as far away from what I thought the thread was about as we can get , The clue is in the title

 

[AdamPini]

KYS any idea on barrel life with that 22CM

 

[long range newbie]

anyone got a 22br to show?

 

[pc3]

either .257 Weatherby or 6.5 WSM or if pigs are on the menu

 

[softcock]

KYS any idea on barrel life with that 22CM

-
most likely no different than, .22 CHeetah
.
edit add : off Predatormasters.com

"22 CHEETAH MARK II"
wildcat is the product of a joint effort by Jim Carmichel and Fred Huntington- Hence the capitol C and H. Case capacity exceeds the 220 swift by about 10 percent.
The 22 CHeetah is distinguished from other 22 wildcats that are based on the 308 WCF or 243 WCF by the small primer pocket. To avoid potential problems associated with small rifle primers -hangfires- Hodgdon reccomends a load density of 90 percent or better. Two powders are tops for this cartridge H380 and H4350. The 22 Cheetah is a very specialized wildcat and requires special attention to detail.
Max velocity listed for the 55 gr bullet is 4017 fps
.

 

[KYS]

KYS any idea on barrel life with that 22CM

I'm approaching 1k and the chamber and bore look great. Im going to say 2500-3k will be about it. I will be surprised if it goes much passed 3k.

 

[KYS]

My vote is for the 22-250. Fast, flat, and good factory stuff available. Although guys have thrown out several others that fit your bill. But if he really wants the "WTF was that?!?" factor I say find a smith who will work you up an Eargesplitten, and someone who will work up your loads (someone who has an underground reloading bunker far from any population center). And then your buddy might call Zack over at TBAC to see what kind of can might be constructed... I imagine maybe the 338P-1 with a 22 bore. I would love to see that.

No need to have a 338 sized tube for a 22-250. A 30 cal can performs just fine.

 

[Greg Langelius *]

I would look no further than the .243 Win, with the Nosler 55gr Varmageddon, and the Nosler 70gr Ballistic Tip in a 20-22" barrel, loaded with powders from the faster end of the preferred propellant range. The 55 for Varmints, the 70 for larger game.

Neither the barrel length, nor chambering, nor bullet selections, each on its own, is optimal; but for the specified application, compromise is required, and this would be mine.

Greg

 

[kstraughen]

OK So let me get this out there. I have a Remington model 7 in 243. I have always thought of putting a heavier barrel on it and other changes. has anyone or does anyone see any issues that i am not foreseeing with this model 7. Thanks in advance.

 

[knockemdown]

OK So let me get this out there. I have a Remington model 7 in 243. I have always thought of putting a heavier barrel on it and other changes. has anyone or does anyone see any issues that i am not foreseeing with this model 7. Thanks in advance.

Both the rifles I posted in this thread are Rem Model Sevens. The Seven is a shorter receiver than a 700, so you will be constrainted from running belly fed rounds with long c.o.a.l. Also, there are no DBM systems for the Model Seven, far as I know. So, if you are wanting to run, say a fast twist .243 with 105s or 115s, you're gonna want a more capacious SA (read Rem700) to build off of.

Otherwise, rock on wit da Seven, and have your smith throat the chamber accordingly. That Seven in .22-243 is a little monster with the 75Amaxs @ 2.715" coal (.005 off the lands), and they feed beautifully...
Good luck!

 

[TOPGuN050]

22-250 or 204 gets my vote

 

[BERTMAN77MK2]

Love thr .17 Fireball and the .204, but have tried neither on a big hog. I would want an AR15
for the rifle, so a necked down Grendel (6mm or .22) would be ok but for hogs I would pick the
6mm.

Also an AR15 can be built In the .223 WSM

 

[Triggerf16]

For pure speed I had a 22-250 shooting 40gr ballistic tips. 4250 fps. Made prairie dogs evaporate. Red mist.

But I'll bet you want to shoot further that 40gr ballistic tips can go.

 

[Whiskey9514]

Why???? 308 has killed about everything on the planet. Can find it everywhere!!!

He said fast not a step above rock throwing speed

 

[7GRT]

Just goes to show the difference in people's idea of ' FAST '

 

[vtb]

Sorry for asking but has anyone tried .30-338 lapua improved with 155L scenar?

 

[Bruiser_Joe]

22-250ai is my choice

 

[7GRT]

Is the 30-338 called a 'Yogi' anyone ?

 

[KYS]

Sorry for asking but has anyone tried .30-338 lapua improved with 155L scenar?

He asked for 22 cal bullets and under.....