.22-250 w/9" twist barrel- LR Bullet Suggestions?

Hungry

Hungry

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I've just put together my quasi-wannabe long range rig in .22-250 even if I have not shot a sniper match in 3 years. It's an M700 that's wearing a .223 (re-chambered by tiriaq, of course) LTR 9" twist barrel, most of you know that the LTR fluted barrels are around 20" long.

Here's the rub... I've had super success shooting 75 gr AMAX bullets out of .223's up to 800 meters at sniper matches (NSCC/CFSAC). They were exiting the barrel at around 2750 fps give or take. With the .22-250 I can easily push this 75 gr AMAX bullet to around 3000 fps.... I'm certain the 9" barrel can handle this 75 grainer. So far so good? :D

Now I would like to know (anybody got experience :rolleyes: ) if anybody has had success shooting the 80 gr Sierra Mk VLD or 80 gr Hornady AMAX using a 9" twist barrel.....

Suggestions ? Thoughts ? Experiences ? Shall I just play it safe and launch 68's , 69's and 75's like I have in the past ? Take a chance on some 80 grainers? What say you experts ? ;)

:cheers:

Barney
 
Most 1/9 won't handle 80gr bullets Sierra says right on bullet box min 1/8 twist
your best choice would be 75gr Bergers they work well in my 1/9 twist Remington in 223
 
Walt Berger told me last week that the 70gr Berger would be just right in my SAN with it's 10" twist (though he did say theywould work in a 10 except when it is really cold - I'll follow up on that train of thought). I might also try the 75 Bergers to see if 10" will do the job. For the price of a box of bullets why not give the heavies a whirl?
 
80's will not work.

Some have had luck with 75 - 77 grain bullets, but I wouldn't count on it.

If it were me, I'd buy some 69's over varget.
 
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Since you already have 75gr Amax, I would keep shooting it. 75gr Bergers will also be a great choice. You can try the 80's but I really don't think they will stabilize.

There have been other shooters who have posted amax working well as high as 3300fps. I can't personally verify this but you got the case capacity to easily go past 3100fps.

Have fun. Nice low recoil, relatively flat shooting rig.

Jerry
 
80 Sierra in a 9" twist

I seem to remember that my first F Class barrel (22-250) was a 9" twist Krieger rechambered from .223. This barrel was tied to an experimental rifle that was so ugly that it was called 'The Mongrel'. The Mongrel being a direct decendant of what is now known as a tubegun.

It has been quite a few years now, but I believe the muzzle velocity was in the 3,150 fs area with great results all the way with the 80 Sierra.

Don't be afraid to try the 80 Sierra in a 9" twist. It may work quite well.

If it will help, the load was 37.5 grains of MR-3100. The case was full!
 
I agree with Corben.

With the speeds you'll be getting from a 22-250, 80's will work. Not so much with a .223 Remington, as it is slower. It is all about bullet RPM, and slow twist+high velocity = RPMs similar to tight twist+slow velocity
 
Corben1 said:
I seem to remember that my first F Class barrel (22-250) was a 9" twist Krieger rechambered from .223. This barrel was tied to an experimental rifle that was so ugly that it was called 'The Mongrel'. The Mongrel being a direct decendant of what is now known as a tubegun.
QUOTE]

Was that your experimental ceramic barrel with the cracks?
Click to expand...
 
The ceramic barrel came later. That one was an 8" twist CM Krieger that was painted refrigerator white. Later, there were two additions to that paint job. First came the imitation stress cracks with a black felt pen. Then the barrel had to be recrowned due to some rust at the muzzle. Couldn't find the can of white paint, so painted the muzzle bright red. That was back when 'F' stood for fun.:runaway:

Got e-mails this past week from both Stan Frost and Jim Thompson. They both mentioned that ceramic barrel. This was Jim's statement............

"Fully agree about Bill's ceramic barrel! There is now a generation of shooters who know nothing about it!!"

I hadn't given it a thought, but it has been over a decade ago since the old Mongrel was used at Connaught. Some things are hard to forget!

Gotta find a photo of that old beast and post it for those that missed it.:D
 
I found that the Savage 1:9 would shoot the Sierra 80 match bullet just fine so long as the velocity is kept up. Is your chamber throated to take a long bullet, so you don't lose powder capacity?

My 30" 223 gets 2900 fps. If your short barreled 22-250 can get the same velocity, it would work just fine.

My 22-250's were all Ackley chambers. I got 3400 fps with the 80, so enough RPM was not an issue. I use Win 785 and N160. The N160 was best, but the standard chamber may be too small for such a bulky powder.
 
The Mongrel

This is the original 9" twist 22-250 barrel on the old Mongrel. Must have been during initial testing, as the old Redfield 6400 did not have sufficient elevation to easily take the rifle to 900M.


IMG_0001-1.jpg
 
Ceramic Barrel

The Mongrel with the ceramic barrel. This photo taken before the stress cracks and red paint.

In the background is yet another junk box (Musgrave) special. If I'm not mistaken, the only rifle to win the Canadian Long Range Challenge twice. Once as a 6mm Rem. and once in 6.5X.284.

Finding these photos was a real trip thru time.

IMG_0002-2.jpg
 
Berger recommends a 9" twist for the 73 gr and 8" for the 75 and up to the 90 which wants a 7". I imagine the 75 will work in the 9" and maybe even the 77 and 80, but you'd need to test drive them to be sure.
 
Corben1 said:
The Mongrel with the ceramic barrel. This photo taken before the stress cracks and red paint.

In the background is yet another junk box (Musgrave) special. If I'm not mistaken, the only rifle to win the Canadian Long Range Challenge twice. Once as a 6mm Rem. and once in 6.5X.284.

Finding these photos was a real trip thru time.

IMG_0002-2.jpg
Click to expand...



Those are really funky! I love them!
 
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