Guys,
I am thinking about building a 22-6mmAI. I am thinking a bartlein 1-8 twist barrel at 26-27". I know you can use 6mm cases to get there. What about the 224 TTH? Would that not be a better case to start with? Already necked down, just have to blow the shoulders out to 40 degrees. Also I have searched here and elsewhere for load info. Most is for standard 22-6mm, not the AI. Looking at the big Bergers 80-90grain for this rig. I like the bigger bullets for long range shooting. Any help/advise would be appreciated.
Mark

Does a 22-66mmAI look like this?

That's IT!!!!!!!!!!!!!

Might be a little overbore...

Barrel makers gotta make a living too...

What about a .22 caliber on a 243 case? Quality brass is very easy to acquire.

Only in a short action.

Personally, I wouldn't think of anything more than a 22-30mmAI, full length of course, to avoid that overbore issue.

Ed

About 20 years ago me and my nephew tried about every 22cal possible. we tried a 22-284 that is just slightly larger capacity than a 22-6mmAI........you will never get the speeds you think you will and the barrel will be half shot out by the time you work up a load. Biggest I will go ever again is a 22-250AI with 1-8" twist. about 5 times the barrel life and you give up very little velocity.

I always wondered if the 22-6mm would be almost the same as the 220 Swift.

This is off accurate shooter fo 22-6mm http://www.accuratereloading.com/226rem.html

49.0 RELOADER 15

4484

0.682

NOSLER 40 BT


50.0

4585

1.686


51.0

4634

2.112


53.0 H 4350

4211

1.501


54.0

4286

1.366


48.0 VVN 540

4324

1.782


49.0

4447

2.494


45.0 RELOADER 15

3958

0.314

NOSLER 50 BT

If you have access to Wildcat Cartridges Vol. II from Wolfe publishing, check the data for the .224 Clark. Dimension drawings show it is a little longer to the neck/shoulder junction (11.933") and a little fatter at the shoulder (.455) than Hornady's drawings for the standard .22/6mm; it has a 30 degree shoulder. I don't know the dimensions for the .22/6mm AI, but I'd suspect they are close enough for starting loads.

They have a 5.6x57 in Europe! Be about the same thing.

The .223 WSSM has just about exactly the same powder capacity as the .22/6mm, and I've used .223 WSSM data in a .22/6mm with just about identical results, though obviously that would depend on the throat length in the .22/6mm, plus throat wear in either rifle. But the main point is that .223 WSSM data is a good starting point for the .22/6mm AI.

No, thats a 25 caliber....

Haha blue tip nosler....... good catch

Thanks for all the info. I will be sending a long range Remington to Pac Nor for a new barrel next year. Always like the oddball stuff.
Have a Merry Christmas all.

yep.......6mm Rem w/47 grs is overbore enough....

Pretty much the truth. I had a .22-6mm made up in a 26" barrel, and my experimenting has lead me to using Norma MRP with 75 grain bullets. I still cannot manage less than 1" groups at 100 yds, though...not impressed thus far.

My .22/6mm had 24" 1-8 Brux barrel, in a heavy sporter contour. It was easy to get to get 5-shot groups inan inch with several bullets, and much smaller with some. But it absolutely hated 75-grain A-Maxes!

I traded into a mark 1 .22 cheetah awhile back. We loaded up some 52 grainers and stepped up to the chronograph with much anticipation only to be let down. We renamed it the .22 housecat. I was only about 120 fps faster than a regular 22-250. I did have some very interesting results loading superformance powder in a 22-250 improved version though. We loaded 70 grain Berger's and superformance powder in a rifle that has a 27" barrel and a chamber half way between an ackley and a stock 22-250 case. We chronographed 3600+ fps and loaded the same brass 4 times. Never had a sticky bolt and brass was still good all the way around. We loaded up incrementally at least 6 times before we reached that velocity. I will say one thing about these high speed fast twist barrels wipe out used often is your best friend.

22-243 might be an option, get a very good barrel and life will be comparable to other fast calibers. Brass is readily available and just run it thru the die and reload. Have seen them to be very accurate even pushing 3000 rds.

Built our first 22-6mmAI shortly after Ross Seyfrieds article in the Rifleman (Jan 08). This was a 7 twist Douglas Stainless blank fit on a long 700 action. Results were impressive on steel to1180 yds and prairie dogs over 1000 yds. It loved 75 Amaxs and Bergers too. After about 300 shots it started taking bullets apart, about one out of four or so would make a puff of dust maybe fifty yard from the muzzle. The throat and about three inches past were very rough. Put on a new 8 twist Brux but held the same reamer back to Creedmoor length. All is well after at least 500 shots. Standard 22-250 brass headspaces perfectly but comes out with a way short neck compared to the 6mm brass.
Cases are easy to make for the standard 22-6mm AI. Use a 6mm AI bushing die with the proper sizes bushing for your neck. I made a Wilson seating die with my chamber reamer. Have fun. Dale

In trying yet another load, I managed .890" 5 shot groups at 100 yds: R-P 7x57 cases, 50.0gr. MRP, 60gr. Hornady V-Max bullets for 3865 fps.

barrel life.........?

tikkanut:

Undetermined as of yet. Currently my rifle has 200 rounds down the pipe.