22-250 loads (& velocities)

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Re: 22-250 loads (& velocities)

Post by bladeracer » 16 Jul 2018, 3:12 pm

Sschrep1 wrote:I have a 22-250 remington 700 varmit fluted 26inch barrel , just wondering if someone else owns one an knows what projectile this likes , lm trying a 50gr sierra with landings at c.o.l -24.06 an useing AR2208 , l just cant find what this gun likes really over spending the money trying all different ways , there must be someone that has found this secret load , if you can please let me know what projectile to use an length c.o.l an gr of powder for adi so it groups at least ok thanks steve


Does it shoot any factory ammo well?
I don't worry about jump during initial load development, but I'm surprised you can get a 50gn bullet close to the lands. With a longer bullet I'd start about 20-thou off the lands, shoot some loads, and then play with jump after I've settled on an accurate load. I can't work out what "c.o.l -24.06" refers to, is it a typo?

AR2208 is a great powder, but would not be my first choice here. BM8208 might work better, but you should be able to get AR2208 to shoot well.
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Re: 22-250 loads (& velocities)

Post by Stix » 16 Jul 2018, 11:22 pm

bladeracer wrote:
Sschrep1 wrote:I have a 22-250 remington 700 varmit fluted 26inch barrel , just wondering if someone else owns one an knows what projectile this likes , lm trying a 50gr sierra with landings at c.o.l -24.06 an useing AR2208 , l just cant find what this gun likes really over spending the money trying all different ways , there must be someone that has found this secret load , if you can please let me know what projectile to use an length c.o.l an gr of powder for adi so it groups at least ok thanks steve


I can't work out what "c.o.l -24.06" refers to, is it a typo?.


COAL of 2.406" i suspect
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Re: 22-250 loads (& velocities)

Post by SCJ429 » 17 Jul 2018, 6:18 pm

There is no secret formula that will have you shooting bug holes. The loads should get you in the ballpark. There are so many variables but the biggest variable is with your rifle.

A friend had a Remington 700 in 22/250 a few years ago, it would not shoot and would copper foul badly. The best I could do with it was about four inches, it was a rough barrel and soul destroying for the shooter. I told him that we could get it shooting eventually but may need to bed it, change the trigger and even rebarrel it. He sold it in disgust and bought a Tikka. It shot a 0.3 group on its first round of load testing.

How much do you love your 700? Enough to put a $1,000 barrel into it?
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Re: 22-250 loads (& velocities)

Post by Barnard » 18 Jul 2018, 9:33 pm

Stix,
continue with the BM2,.....it's the best all rounder (speed with accuracy) powder for the 22-250 especially with bullet choices between 40gr to 55gr.
i have a load that have always performed great in several of my 22-250's and are;

brass = hornady.
powder = BM2 @ 34.gr (or 34.5gr)
Primer = Federal gold match.
COAL = 64mm. (or 65mm)
bullet = Nosler 50gr ballistic tip.
speed = 3680 fps (or 3700 fps)
accuracy = averaging 0.3 to 0.4 MOA.

a good 22-250 should deliver around 3550 to 3750 fps with a 50gr pill.
if not perhaps it may not be the ideal powder.
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Re: 22-250 loads (& velocities)

Post by SCJ429 » 18 Jul 2018, 10:12 pm

Nice work to get your rifle shooting in the .3s using Hornady brass. What brass preparation do you do to get them shooting? Are you using a factory barrel on your rifle or aftermarket Barnard?
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Re: 22-250 loads (& velocities)

Post by Barnard » 19 Jul 2018, 5:08 pm

SCJ429 wrote:Nice work to get your rifle shooting in the .3s using Hornady brass. What brass preparation do you do to get them shooting? Are you using a factory barrel on your rifle or aftermarket Barnard?


both 22-250's are factory barrels.
Sako and a Howa.
prep work?.....nothing much, they're not batched or anything.
mostly just neck sized, as i've set my sizing die to do barely any significant sizing.
as long as they cycle nicely through the actions.
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Re: 22-250 loads (& velocities)

Post by SCJ429 » 27 Jul 2018, 3:43 pm

That is a great result especially with the Howa, I have not seen one that could shoot in the .3s. You must have a Wednesday barrel. Sako and Tikka barrels have really set the standard with their barrels so it is not surprising they can perform even with average quality brass.
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Re: 22-250 loads (& velocities)

Post by Member-Deleted » 28 Jul 2018, 12:14 am

Sschrep1 what twist rate is your barrel ?
I have a 22-250 with 26'' barrel with 1-10 twist and it thrives on 60-69gr Hornady with AR 2209
Sometimes twist rate can decide what your rifle likes
I also have a sako 24''barrel with 1-14 twist and its magic bullet weight is 55gr with BM2
Also another one with a 26''barrel 1-12 twist and it likes the 60gr Hornady with AR2209
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Re: 22-250 loads (& velocities)

Post by SJ_Long-Range » 19 Feb 2020, 10:38 pm

I've just bought some ADI AR2206H to try with some 55gr, 52gr and 50gr. Hope the accuracy can found with this range of projectiles
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Re: 22-250 loads (& velocities)

Post by goldiexxxx » 03 May 2021, 3:24 pm

Hoping someone can validate my 22-250 results. I have a Ruger M77 MkII that I bought in as-new condition. I have an accuracy load of 36.5gr of AR2208 with a 55gr Sierra Gameking (Super roo), however, the velocity as tested with a Magnetospeed is only 3455 fps. The ADI load data has the max load of 36gr as 3730 fps with the same bullet.
What is going on here? ADI manual unrealistic? or Magneto inaccurate?

Can anybody provide any answers?

Cheers,

Goldie
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Re: 22-250 loads (& velocities)

Post by Bill » 03 May 2021, 6:37 pm

SCJ429 wrote:That is a great result especially with the Howa, I have not seen one that could shoot in the .3s. You must have a Wednesday barrel. Sako and Tikka barrels have really set the standard with their barrels so it is not surprising they can perform even with average quality brass.


I disagree, if anthing Ive seen quite a few budget Howa's outshoot budget Tikka's, my first Howa HB 223 stacked 5 in 6mm at 80m and my mate who was with me at the time grabbed it and i never got it back (Fiochhi factory ammo, we were shooting on his property). My Grendel HB also shot Lapua 155gr mega around 0.3 but the speed wasnt there lol, Ive since rebarreled it to 6mm ARC due to wanting more speed and efficiency in the sub 90gr pills.

Have a few mates that have had trouble to get factory T3X barrels to shoot consistent with factory ammo and hand loads and Beretta even accepted 1 back under warranty after they couldnt get it to shoot, obviously once they were rebarreled they held 0.5 moa quite easily. There is a reason Tikka only give a 3 shot guarantee for the their budget rifles
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Re: 22-250 loads (& velocities)

Post by SCJ429 » 03 May 2021, 7:00 pm

goldiexxxx wrote:Hoping someone can validate my 22-250 results. I have a Ruger M77 MkII that I bought in as-new condition. I have an accuracy load of 36.5gr of AR2208 with a 55gr Sierra Gameking (Super roo), however, the velocity as tested with a Magnetospeed is only 3455 fps. The ADI load data has the max load of 36gr as 3730 fps with the same bullet.
What is going on here? ADI manual unrealistic? or Magneto inaccurate?

Can anybody provide any answers?

Cheers,

Goldie

Your speed seems very slow, try adding more powder until you see pressure signs and see what speed you can get. Are you scales accurate. Is your chrono reading low for other rifles?

Bill, you can disagree but I have still not see a Howa with a factory barrel that can shoot 0.3 of an inch at 100 metres. I have seen some 223 with heavy barrels that can shoot quite well, it seems that Howa can produce a decent .224 barrel.
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Re: 22-250 loads (& velocities)

Post by Bill » 03 May 2021, 8:57 pm

fair enough SCJ429 maybe you need to get out more often :drinks:
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Re: 22-250 loads (& velocities)

Post by bladeracer » 04 May 2021, 9:51 am

goldiexxxx wrote:Hoping someone can validate my 22-250 results. I have a Ruger M77 MkII that I bought in as-new condition. I have an accuracy load of 36.5gr of AR2208 with a 55gr Sierra Gameking (Super roo), however, the velocity as tested with a Magnetospeed is only 3455 fps. The ADI load data has the max load of 36gr as 3730 fps with the same bullet.
What is going on here? ADI manual unrealistic? or Magneto inaccurate?

Can anybody provide any answers?

Cheers,

Goldie


There are lots of variables that could be the cause of such discrepancies.
Are you neck-sizing? I have seen 100fps more from the same piece of brass after full-length sizing it compared to being neck-sized.
Are you loading to the specified length? If you load longer you will increase case volume causing lower pressure.
Is you throat longer than standard?
Are you using Winchester brass as ADI used?
Is your scale calibrated? Try weighing a 40gn bullet on it.

ADI's max load is the max they saw in their testing (although they most likely just computer modeled it), your max load could be significantly lower or higher than theirs. Until you start seeing pressure signs you are not close to maximum.
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Re: 22-250 loads (& velocities)

Post by goldiexxxx » 04 May 2021, 7:09 pm

Yes, full length sizing.
Not loading to specified length.
Specified = 2.350
Jam length = 2.418
C.O.L = 2.380
Don't know if the throat is longer than standard, I'd expect every manufacturer makes barrels differently.
Using once fired Hornady brass. Its now at least twice fired.
Been using my Hornady electronic scales, which I have read can be inaccurate. Today I borrowed an RCBS balance scale and my electronic scales are perfectly calibrated to the balance scales (yeah surprised me too).

I note that in my Lyman manual, the max load for a 55gr V-Max is 37gr of Varget (AR2208) however, even with more powder than ADI, their velocity is still lower.
How accurate are those Magnetospeed chronographs? Can I rely on that device to be accurate. I think so, because I am getting a 3.7" drop between 100m and 200m, although, I dont even get that amount of drop from my 223 with 11gr less powder with the same bullet. Confusing for sure.
I will keep loading higher until I see pressure signs. I can fit 39gr of AR2208 without even compressing the powder. Still I will start working from 37gr up.

Thanks for your input blokes.
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Re: 22-250 loads (& velocities)

Post by Larry » 04 May 2021, 7:19 pm

The magneto speeds are pretty accurate there are not a lot of sources of error in the technology they use.
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Re: 22-250 loads (& velocities)

Post by SCJ429 » 04 May 2021, 9:51 pm

Bill wrote:fair enough SCJ429 maybe you need to get out more often :drinks:

Thanks Bill, I got out last weekend with my 223 and shot four groups, two of the best measured 0.350. not my best shooting but not bad for a factory rifle with 4,000 rounds down it. How did you go?
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Re: 22-250 loads (& velocities)

Post by goldiexxxx » 08 May 2021, 8:04 pm

goldiexxxx wrote:Hoping someone can validate my 22-250 results. I have a Ruger M77 MkII that I bought in as-new condition. I have an accuracy load of 36.5gr of AR2208 with a 55gr Sierra Gameking (Super roo), however, the velocity as tested with a Magnetospeed is only 3455 fps. The ADI load data has the max load of 36gr as 3730 fps with the same bullet.
What is going on here? ADI manual unrealistic? or Magneto inaccurate?

Can anybody provide any answers?

Cheers,

Goldie


I resolved my problem, simply kept adding more powder until I got the required speed. Settled on 38.5gr of AR2208 for 3740 fps with a half inch group at 100m. Seems like the ADI load data is just WRONG. Cases looked good and no extra effort to lift the bolt, with basically no noticeable drop from 100 - 200m. Now that's what I had expected.
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Re: 22-250 loads (& velocities)

Post by Blr243 » 08 May 2021, 8:22 pm

Good news. Great result. Accurate, fast and safe ....and I learned something too. I had not heard of magneto speed prior to this post. So I googled it and was pleasantly surprised to see a chronograph that attaches to the rifle, BINGO. The barn had one in stock so out with the card and done. No more stupid tripods for me. Perhaps I Just might even shoot my tripod on purpose as a ceremony especially signifying the end of my tripod mounted chrono days .
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Re: 22-250 loads (& velocities)

Post by AZZA'S HJ47 » 08 May 2021, 10:41 pm

38g of 2208 in my m77 ruger pushes a 53g vmax to 3750 and whislt im fireforming the brass to suit the ackley chamber im still getting half inch groups @100. Speeds are almost the same after brass is reloaded.
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Re: 22-250 loads (& velocities)

Post by Bill » 09 May 2021, 9:03 am

SCJ429 wrote:
Bill wrote:fair enough SCJ429 maybe you need to get out more often :drinks:

Thanks Bill, I got out last weekend with my 223 and shot four groups, two of the best measured 0.350. not my best shooting but not bad for a factory rifle with 4,000 rounds down it. How did you go?


Thats some good shooting SCJ429 sounds like youve got an accurate gun :thumbsup:

Cheap new bullet for the 6mm on friday, ran out of 8208 and not enough 2206H on hand so substituted in Re10x. Zero reloading data available for this combo so I was ultra cautious as its a bit on the fast side. 2nd group went 0.4 so I found the low node, groups opened up with more speed and top speed a bit away 1-1.5gr. Will play around with the seating depth once Ive found or not found a top accuracy node. I only started using a powder thrower recently, teaspoon is back in the draw :lol:

64gr at 3360fps.
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Re: 22-250 loads (& velocities)

Post by Skinna » 09 May 2021, 12:56 pm

Bill wrote:
SCJ429 wrote:
Bill wrote:fair enough SCJ429 maybe you need to get out more often :drinks:

Thanks Bill, I got out last weekend with my 223 and shot four groups, two of the best measured 0.350. not my best shooting but not bad for a factory rifle with 4,000 rounds down it. How did you go?


Thats some good shooting SCJ429 sounds like youve got an accurate gun :thumbsup:

Cheap new bullet for the 6mm on friday, ran out of 8208 and not enough 2206H on hand so substituted in Re10x. Zero reloading data available for this combo so I was ultra cautious as its a bit on the fast side. 2nd group went 0.4 so I found the low node, groups opened up with more speed and top speed a bit away 1-1.5gr. Will play around with the seating depth once Ive found or not found a top accuracy node. I only started using a powder thrower recently, teaspoon is back in the draw :lol:

64gr at 3360fps.


Good to see youre keeping the tea spoon Bill...will still come in handy for dosing up on that cement mate... :lol:

Maybe need to find the spectacles though, cos i think this is a thread about 22-250, not 6mm mate... :lol:

(couldnt resist some good ol' time banter :lol: )
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Re: 22-250 loads (& velocities)

Post by Bill » 09 May 2021, 2:37 pm

Hey Skinna I sold my 22-250 last year and built an improved version....... just happens to be a 6mm. ;)
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Re: 22-250 loads (& velocities)

Post by Varmtr » 21 May 2021, 3:10 pm

50gr NBT
39gr Hogdgon CFE-223 ( awesome powder pity Winchester no longer imports )
Fed BR primers
Nosler brass.
coal to suit my chamber with 4 thou jump.

magneto speed 3980 fps av with es of 22 fps.
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Re: 22-250 loads (& velocities)

Post by Skinna » 22 May 2021, 11:51 am

Varmtr wrote:50gr NBT
39gr Hogdgon CFE-223 ( awesome powder pity Winchester no longer imports )
Fed BR primers
Nosler brass.
coal to suit my chamber with 4 thou jump.

magneto speed 3980 fps av with es of 22 fps.


Hey Varminter, can i ask, do you know, or can you measure the seating depth from the point of how much of the NBT is in the case.?
If you do or can measure, dont worry about the boat tail or how much bullet is actually touching the case, just the general measurement of in & out of the case, & maybe an Ogive measurement of the bullet itself too,
Just curious, thanks. :)

(dont ask much hey... :lol: )

:drinks:
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