Home Forums Hunting & Shooting Custom Rifles & Wildcats fast twist 22 cal cartridge questions

The fastest I've seen a 75 go from a 22/250AI is @3400fps and that took 26" of barrel.

But what if the headstamp is different?

Cant help you on the QL numbers, all I can report are the real world numbers, which are handily corroborated by what info is out there on the interwebs.

The .22 Creedmoor should have right at 52.5gr H20 capacity, while the 22-250 has about 46.5 or so, so not exactly the same...

His quickload data was for a 22/250 Ackley Improved, which won't have LESS capacity than your 22 CM.

80grs at 3500 ain't gonna happen at SANE pressures, PERIOD

The Creed case does, in fact, have greater case capacity than the 22-250, even in Ackley form. The standard 22-250 has about 43gr. The numbers I quoted above are for the 22-250 Ackley, and the 6.5 Creedmoor. The .22 Creedmoor should be very similar, as the only thing that changes is the neck.

Case in point....22 Creed brass can be fireformed from .22-250 brass....which, by default, means it is bigger.

Like it or not, believe it or not..its happening everyday..

It's been awhile since I've seen this level of dumb [bleep] in a single post, outside the Freak Show.

Congrats

Alright...I have zero issue admitting when I am wrong. Please educate me...If I am mistaken, please tell me where.

As such, further explain why there are literally dozens of shooters getting these same numbers from this combination.

22-250AI




6.5CM




Study the drawings carefully....

David

.223Wssm is significantly larger than a 22-250AI/22CM and has a case capacity of 53.7grns. QL shows 44.0grns of H4350 pushing an 80grn Berger at 3367fps in a 24" barrel at nearly 66kpsi.


See the problem?


David

Yeah, but people are forming 22/250 brass into 22CM.....

I don't like your tone - there are DOZENS of shooters (on the internet) getting 3500fps w/ 80grn Bergers in 22CM.

My google-fu couldn't find these people but I'm sure they are there.


David

Thanks DF !

I think I remember seeing a thread with your magazine mods.

Curious, was the 722 originally a .222 ?

The WSSM is considerably shorter that the Creedmoor case, yielding roughly equivalent case capacities, depending on brass manufacturer.

As for the 22-250 Ackley case capacity numbers...I admit, I pulled them off the net...Nosler states the 22-250 Ackley holds 46.3gr water, while the 6.5 Creed, again, accooding to Nosler, holds 50.9gr of water...

As for "dozens," perhaps I exaggerated. There are roughly five .22 Creedmoors in the wild built by my smith, mine will make 6. Of those, 3500fps with a 75/80gr bullets is the norm. The other half dozen or so write ups online corroborate these numbers...Again, cant help you with Quickload numbers.


In the end, arguing doesnt change anything, and with that, I will politely exit and go shoot instead of type.

A pizzing match over a cartridge. You can tell winter is coming....

Thats the beauty of wildcats, no published limitations on the "What may be possible"
I on the other hand am more likely to stick to pressure tested data and if want more speed then use a bigger cartridge or longer barrel or both!!!!!!
Ever wonder how a .223AI with minimal case gain is SO much better then the regular .223.......... Pressure , pressure pressure!!!!!!

Tom,

I'm not in a pissing match - trying to help my fellow forum member keep all his fingers, eyes, teeth, etc.....

Personally I don't have need for a case that large in .224 cal, thinking a 223AI will be perfect!

David

Are the drawings too complicated for you to cipher?

Who's shooting 80's in a 22CM at 3500+fps with a 24" barrel? Have you been there when they were shooting? Did you get to see the chrony? (I would advise standing well back...). Or is a rifle smith telling you this?

Feel free to post links - I would love to see!

David

Exactamundo! Steelie had it right all along, 8 twist .223AI longer barrel life, no trimming of cases, more "efficient" with the components you put in it, easy to shoot and kills stuff really dead.

Can we just take a second here since it's Easter for Christ fugkin' sake?

I'm all for being a loony and if you want to call your 22-250 AI the .22 Creed Pussy Killah, by all means, order a custom reamer and get after it. You want to shoot cottontail with the 26 Nosler? You have my blessing. I give not a fugk.

But the 22-250 is the .250 Savage necked down. That birthed one of the GREATEST cartridges the world hath seen. Years later, guys AI'd it. Great. More powder, more faster. I get it.

Years later, it got necked up to 6.5 in an effort to address mag constraint issues. Awesome. Great round. Let's neck it down to 6? Absolutely. Makes sense. the 6 has higher BC bullets than the 25 with less recoil than the 6.5's and the ability to runner lighter bullets at higher speeds.

But now... we're gonna go full circle... and claim that the fugking 6.5 Creedmoor case necked down to .224 is some sort of magic?

IT'S THE SAME FUGKING CARTRIDGE.

By all means use it, but you're shooting a 22-250AI and that ain't going to yield 3,500fps with an 80gr Hornady.





Clark

Yep, .222. It's '50's vintage, the .223 was introduced in '64. IIRC, the .222 was designed by Mike Walker around '50, the 722 may have been out before that.

YEARS ago, when I was just a pup (early high school to be exact) a good bud would pick me up in his Plymouth and we'd go crow shooting. He was a few years older, had a drivers license and a car...

I had a Savage 340 .222, he had this 722, we both hand loaded. I got into checkering around that time, did a skip-a-line pattern (it was considered cool back then) on this gun.

Some years later I traded for it. The barrel was tired, a gunsmith I knew had a Hart blank in his shop. I got him to fit and chamber in .222. I never liked the way he chambered it, so when I got into the .22-204 business, I had my smith (not him) chamber it for the new round.

As a slow twist (14), it's useless with heavy bullets, but super accurate with 40's, like half inch or better. With the 10X Zeiss, it handles like a .204, quick bullet strike without losing the target; you can watch the bullets hit.

The 722 trigger was tweaked to perfection, the gun glassed and free floated. It's a keeper.

DF