22 creedmoor help

[Mt.Boy]

I just bought a rifle that I am thinking hard about rechambering to a 22 creed. I was wondering if any one might give me some suggestions on what twist barrel to go with. I would like to shoot bullets 75 and up. But had a 22-250 ai years ago wiling a 1-7 and it blew up every thing I tried to feed it. Don’t wanna go down that road again. Also what powders work the best and barrel lengths. Gun will be just for fun banging steel and stuff thanks

 

[PhilC]

There are 22CM threads in this sub-forum where you'll find what you're looking for, mine included. I'm running an 8T, 6 groove, 26" X-Caliber and have pushed 77gr bullets to 3500fps without issue.

 

[Knifeman]

I went with a 8t Brux. I’ve shot everything from 65gr Sierra- 80.5 Bergers. Settled on 73gr ELD for coyote hunting. I went with 40thou freebore. Freebore will come quick enough. Good luck

 

[Mt.Boy]

Thanks

 

[Mt.Boy]

Have any of you shot a barrel out yet. Just wondering what kinda life to expect

 

[McFred]

You might check out Bartlein's recent 400MODBB material for a barrel burning cartridge:

NEW but LAST **UPDATE** on New Bartlein "Hard Steel" barrel.

I had two (2) 7mm Sherman Short Mag barrels about a year and 1/2 ago. They shot GREAT, however, they ate up my 2 Krieger barrels like a kid on Halloween night eats candy! It kind of "hacked me off" and I gave up on the cartridge. I missed the Sherman and wanted one again. Sooooo I ordered a...

forum.accurateshooter.com

Preliminary evidence seems promising.

 

[Mt.Boy]

Any guesses on what the barrel life is

 

[B23]

Barrel life will be somewhat and even largely dictated by how you treat it. Get it hot and keep bang away at it which is easier to do and happens more than you probably think and you can roach the throat out of it fairly fast but keep that in mind and you should be able to get somewhere around 1000 rounds give or take. You'll have to chase the lands along the way but that's normal.

 

[Mt.Boy]

Thanks

 

[xswanted]

I just bought a rifle that I am thinking hard about rechambering to a 22 creed. I was wondering if any one might give me some suggestions on what twist barrel to go with. I would like to shoot bullets 75 and up. But had a 22-250 ai years ago wiling a 1-7 and it blew up every thing I tried to feed it. Don’t wanna go down that road again. Also what powders work the best and barrel lengths. Gun will be just for fun banging steel and stuff thanks

An 8 twist will do anything you need unless you’re going to shoot over 85 grain bullets, then go 7.5. 75s will stabilize from the 8 with ease.

Barrel life will be roughly around 1100-1500 rounds depending on how hard you push your load and how hot the barrel gets. My first 22-250ai barrel went at 1200 rounds running 75 and 80 grain bullets with max loads from a reloading book.

My guess is you’ll see about the same from a 22 creed.

Do not use internet loads in that cartridge. There’s nothing magic about it, at safe pressures you should be 75-100 FPS faster than a 22-250ai.

26” barrel should run a 75 in the neighborhood of 3400-3500fps at max book loads.

It’s a neat round for sure, a nice alternative to the 22-250ai just out of the fact you can buy brass for it.

 

[357Mag]

I just bought a rifle that I am thinking hard about rechambering to a 22 creed. I was wondering if any one might give me some suggestions on what twist barrel to go with. I would like to shoot bullets 75 and up. But had a 22-250 ai years ago wiling a 1-7 and it blew up every thing I tried to feed it. Don’t wanna go down that road again. Also what powders work the best and barrel lengths. Gun will be just for fun banging steel and stuff thanks

Mt Boy -

Howdy !

I ran my second wildcat " .22-35 Remington " chambering in a 28" SS K & P 1-8 5 groove.
Case capacity was between that of a stock .22-250, and a .22-250AI. I shot The 75 "A"-Max exclusively, for both varmint & target work ( I shot groundhogs with it ).

It was easy to get 3,420 fps from my accuracy/field load of 40.5gr AA3100 and Fed LR Match.
Change to use of FED Large Magnum Rifle Match resulted in a boost in vel to 3,500fps, but groups opened a bit; so I chose the former load.

I did not shoot the above barrel " out ".

FWIW: Can only say that the 24" SS Hart 1-14 5 groove I had chambered in my wildcat .22-35 went 3,400 rnd before it ever keyholded its first bullet. Will also add..... the 24" Hart was abused by a couple of initial years of cleaning via use of an uncoated steel rod, and a late-in-life cryo' I had done on the barrel....
which directly resulted in chunks of the leade falling out. Big errors in judgement, on my part ! We learn.

The groundhog load I shot in the 24" 1-14 was: 41.2gr WW760 FED Large Magnum Rifle Match and
Hornady .224" cal 55SX .

My point: achievable barrel life will depend on the level of abuse you are willing to inflict on the barrel.
I was pretty easy on mine, as regards things like load pressure levels and cadence of firing went.


With regards,
357Mag

 

[Mt.Boy]

Mt Boy -

Howdy !

I ran my second wildcat " .22-35 Remington " chambering in a 28" SS K & P 1-8 5 groove.
Case capacity was between that of a stock .22-250, and a .22-250AI. I shot The 75 "A"-Max exclusively, for both varmint & target work ( I shot groundhogs with it ).

It was easy to get 3,420 fps from my accuracy/field load of 40.5gr AA3100 and Fed LR Match.
Change to use of FED Large Magnum Rifle Match resulted in a boost in vel to 3,500fps, but groups opened a bit; so I chose the former load.

I did not shoot the above barrel " out ".

FWIW: Can only say that the 24" SS Hart 1-14 5 groove I had chambered in my wildcat .22-35 went 3,400 rnd before it ever keyholded its first bullet. Will also add..... the 24" Hart was abused by a couple of initial years of cleaning via use of an uncoated steel rod, and a late-in-life cryo' I had done on the barrel....
which directly resulted in chunks of the leade falling out. Big errors in judgement, on my part ! We learn.

The groundhog load I shot in the 24" 1-14 was: 41.2gr WW760 FED Large Magnum Rifle Match and
Hornady .224" cal 55SX .

My point: achievable barrel life will depend on the level of abuse you are willing to inflict on the barrel.
I was pretty easy on mine, as regards things like load pressure levels and cadence of firing went.


With regards,
357Mag

Thanks for the info

 

[Mt.Boy]

I just wanna make sure . But with a1-8 twist 26 or 28 in barrel. I shouldn’t have to worry about blowing bullets up right??

 

[B23]

I just wanna make sure . But with a1-8 twist 26 or 28 in barrel. I shouldn’t have to worry about blowing bullets up right??

An 8tw shooting 75's from a 22 Creed should be fine. I'm shooting 80gr ELD-M's from a version of a 22-243 Improved at 3650 from a 28in Krieger 8tw barrel and they're surviving the trip without any problems.

Depending on the bullet maybe if you dropped down to a real light bullet and were launching them at warp speed you may start getting some that won't make the trip but it doesn't sound like that's what you'll be doing with this build anyway so you shouldn't have anything to worry about.

Take care of the barrel in it and it'll give you many rounds of shooting pleasure.

Also, it may be worth putting a call in to Bartlein barrels and talking to Frank Green about their new 400MODBB material barrels. Frank is always great about answering any and all questions. Regardless of which material you decide Bartlein makes an excellent barrel.

 

[Mt.Boy]

Thanks. I had a 22-250 al with a 7 twist pac not and couldn’t hardly shoot anything. It blew them all up

 

[B23]

Thanks. I had a 22-250 al with a 7 twist pac not and couldn’t hardly shoot anything. It blew them all up

There's a few things that could have played in to that, the throat a little beat up and rough being one of them, but a 7tw and the velocities of a 22-250AI are definitely going to generate some pretty excessive bullet RPM's and not a lot of bullets will survive 350,000+ RPM.

 

[PhilC]

Haven't experienced any blow ups shooting 77 - 80.5gr bullets. Had thought of trying 69 SMK but the 77 - 80s shoot so well I haven't bothered.

 

[Mt.Boy]

Haven't experienced any blow ups shooting 77 - 80.5gr bullets. Had thought of trying 69 SMK but the 77 - 80s shoot so well I haven't bothered.

Thanks for the info

 

[McFred]

I've run 88 ELD-Ms at 3150fps in a 1:8" and they do well at my elevation. My drop seems to be "on" for the published G7 BC to 1200yds even though the Berger twist/stability calculator says I'm only at 1.2 on their scale. I have not blown any of them up yet, and I'm 600 rounds in so far. I have a 4-groove 1:7" krieger that blows lots of things up as low as 3050fps.

 

[Mt.Boy]

I've run 88 ELD-Ms at 3150fps in a 1:8" and they do well at my elevation. My drop seems to be "on" for the published G7 BC to 1200yds even though the Berger twist/stability calculator says I'm only at 1.2 on their scale. I have not blown any of them up yet, and I'm 600 rounds in so far. I have a 4-groove 1:7" krieger that blows lots of things up as low as 3050fps.

Thanks for the info