Need some help - 22-250AI

[Sniper338]

I'm going to be jumping back to working on load development on my 22-250AI as I've taken a break with hunting season going on and been too busy...

Cases are all prepped - Lapua Brass

12 twist Brux heavy varmint - working with 60r Berger FB Varmint as I had huge success with my previous standard 22-250 with RE-15 and berger 52r FB Varmints in a 14 twist...

CCI BR2 and Federal Match primers right now.

I tried out H4895 and this barrel does not like it. I then went to RE-15 and groups have closed up some between 35.8gr and 36.4gr, but it still isn't good enough. I have a little testing left still to do with RE-15...

I'm thinking to try H414 next? This would give more speed and lower pressure right?

Question is: What powder do I try next? I'm doubtful with RE15.. I want the wicked velocities and wicked precision of course!

 

[bheadboy]

I found with my rig the loads or h414 did the trick, best groups best velocity gain and most consistnace in SD?ES

give it a try, never had a pressure problem.

bob

 

[onelastshot]

I picked up a Cooper 22-250AI last fall with a 12 twist, 26" barrel. I'm still fire forming brass and haven't worked up any loads as yet but another site member sent me load data using RL-17. The information I have uses the Sierra 55gr SP's. He swears by the RL-17 for both accuracy and velocity.

 

[boltfluter]

IMR4064 was my go to powder for mine. Good luck.

Regards, Paul

www.boltfluting.com

 

[22DASHER]

Without a doubt try H414. It is a great powder for that bullet weight filling up most of your case without over pressuring it. I am launching 55 grain ballistic tips with mine at 4150 so you may reach 4000 comfortably with the 60's.

 

[SmokinJoe]

Another often overlooked powder that works well in that case/bullet weight range is AA2700.

 

[Tommie]

Another vote for H414. Or WW760 which is the same thing as H414.

 

[Yote Hunter]

I'm going to be jumping back to working on load development on my 22-250AI as I've taken a break with hunting season going on and been too busy...

Cases are all prepped - Lapua Brass

12 twist Brux heavy varmint - working with 60r Berger FB Varmint as I had huge success with my previous standard 22-250 with RE-15 and berger 52r FB Varmints in a 14 twist...

CCI BR2 and Federal Match primers right now.

I tried out H4895 and this barrel does not like it. I then went to RE-15 and groups have closed up some between 35.8gr and 36.4gr, but it still isn't good enough. I have a little testing left still to do with RE-15...

I'm thinking to try H414 next? This would give more speed and lower pressure right?

Question is: What powder do I try next? I'm doubtful with RE15.. I want the wicked velocities and wicked precision of course!

Another vote for H 414

 

[Geno C]

Mine really came alive with H380 under berger 70vlds. The 60 is on my list to try with this barrel also. I have a 1-9 twist

 

[jbarnwell]

My go to powder for accuracy and speed has been VV N150. I am shooting a 14 twist and 55 Ballistic Tips. Hope this helps.

 

[357Mag]

I'm going to be jumping back to working on load development on my 22-250AI as I've taken a break with hunting season going on and been too busy...

Cases are all prepped - Lapua Brass

12 twist Brux heavy varmint - working with 60r Berger FB Varmint as I had huge success with my previous standard 22-250 with RE-15 and berger 52r FB Varmints in a 14 twist...

CCI BR2 and Federal Match primers right now.

I tried out H4895 and this barrel does not like it. I then went to RE-15 and groups have closed up some between 35.8gr and 36.4gr, but it still isn't good enough. I have a little testing left still to do with RE-15...

I'm thinking to try H414 next? This would give more speed and lower pressure right?

Question is: What powder do I try next? I'm doubtful with RE15.. I want the wicked velocities and wicked precision of course!

Sniper -

Howdy !

I shot my wildcat .22-35 Remington for many years, first as a 24" 1-14; lastly as a 28" 1-8.
.22-35 has case capacity greater than .22-250; but less than what a .22-250AI has.

Based on that, I'll say this:
In the 1-14, WW60 ( H414 same stuff ) was my accuracy powder, under 55gr bullets and shooting FED LR Magnum Match.
VV160 was nearly as accurate as WW760, while yielding a little more vel. Pressures were fine. I was shooting 41.2gr WW760, and 41.6gr VV160.

In the 28" 1-8, I shot 75gr "A"-Max exclusively ( for both groundhogs and target shooting ).
AA3100 outshot VV160, VV560, H4831; and RL-19. My accuracy load under the 75's was 40.5gr AA3100, along w/ FED LR Match; for 3,420fps.
Primer switch only.... to use of FED LR Magnum Match yielded 3,500fps honest; with a slight opening up of groups.

My point:
For temperature insensitive powders, the new IMR4451 looks like a possible good candidate for your application... w/ lighter .224" cal bullets.
For higher load density w/ still safe pressures, the newest IMR4955 powder would likely work, esp for the heaviest .224's you might shoot in a 1-1
Please Note: IMR4955 loads might come in tad slower on vel than expected. Doesn't mean they won't be accurate. You'd just have to try.

I'm a fan of " high load density " .


With regards,
357Mag

 

[dkhunt14]

We shot a lot of 4064 in a 22-250. Not sure about an Ackley. Some of my buddies used Varget. Matt

 

[Sniper338]

I tend to always find an accuracy load that ends up with high density inside the case, so if H414 does fill the case well that may just be one I will have to try.

 

[357Mag]

I tend to always find an accuracy load that ends up with high density inside the case, so if H414 does fill the case well that may just be one I will have to try.[/QUO


Sniper -

Howdy, again.

I don't believe you'll be able to run w/ a " full case " of H414 ( WW760 ).... IMHO.
Load densities in the lower 90's, perhaps ?

Please keep us all informed !


With regards,
357Mag

 

[22DASHER]

Mine is near 100%

 

[Tommie]

I tend to always find an accuracy load that ends up with high density inside the case, so if H414 does fill the case well that may just be one I will have to try.

I too prefer a high load density. H414/WW760 has been about optimum for me. Played with IMR4064 and found some good loadings but I just don't care for the relatively large amount of air space between the powder column and bullet. On the flipside, 4064 may be optimum for 40 grain bullets.

 

[JAnderson94]

I am running a CBI varmint contour 9 twist on my savage model 10. My load is using lapua brass, CCI 250's, 53 V-max moly'd, and CFE 223. It shoots in the .3s very well at about 4100fps. I would strongly look at using a 53 V-max due to it's high B.C. It is a hammer on small critters, but if you shoot a tougher hide animal at close range the bullet does tend to splash. I believe some of it has to do with the 9 twist barrel spinning them at above maximum rated rpm.

 

[A_Gamehog]

[/Question is: What powder do I try next? I'm doubtful with RE15.. I want the wicked velocities and wicked precision of course!QUOTE]

Posted above, JAnderson has the bullet right. Primer right also. I have the powder CFE223 but stopped with Varget after many other powders tested.

Powders:
1). Varget
2). LT-32
3). Ramshot Big Game
4). IMR 8208


I use Nosler brass and 53V-max, CCI 250's
1-9 twist 26" 22-250ai

 

[sundance]

I used H 380 in my 22-250 AI and it shot 55 grain Sierras real well for me. It was a Dowling built Rem 700 with a 12 twist barrel.

 

[AckleymanII]

I have shot Win 760 with a fed 210 with 55's for 20+ years, 4100 fps with 26" barrel, 44-45g

60g bullet at 3700, 12T, 37g of 760. very, very accurate, same 210 primer, in a zero freebore chamber.

50g Ballistic tips at 4200 with 47g of 760, but you have to use a very long drop tube to get the powder in the case, very low ES.

2700 works well, almost exactly the same loads, back off 2.0g and work up on the powder charge.

760 is easy on barrels so is AA 2700. 4064 eats barrels in this caliber, so be fore warned.

I have a pard that is shooting Varget with great success with 55g bullets, very tiny groups, great velocity, Lilja and Brux barrels.

load density is at or near 100% with win 760, H414, 2700, and Varget, Not so much with R#15, about 90%, still very accurate at around 3900 fps(39g Max load).

We shot a bunch of coyotes with the 60g berger, darn near shoots them in half, no kidding. I did shoot a bobcat in half with the 60g berger, about a 90 yard shot. The spine was the only thing holding him together.

I wanted to try the 60g Nosler parititon, and had to throw away the entire front half a 100 lb doe shot broadside at 100 yards.

I have shot Remington brass for most of my life, but also shot PMC. The 22/250 AI is extremely accurate, a 22 PPC LONG.