22 creedmoor varget 90gr heavy bullets

[cjens]

Hey y'all recently got a 22 creedmoor built. 18inch barrel 1-8 (supposed to 1-7 twist). Anyways already ordered some 90 a tips and I have a lot of varget powder laying around and wonder if anyone has some load data with varget and heavier bullets? I'm thinking maybe it's too fast burning should go restock on some h4350. Yes scope is not even attached.

 

[Varmint Hunter]

I doubt that you will get a 90gr a-Tip to stabilize in you 1-8" twist bbl. I'd limit bullet weight to about 80gr. H4350 should work with the 80s.

 

[cjens]

I think your right but unfortunately I got the bullets shortly after ordering the barrel. So I'm going to try it. I'll go pick up some h4350 today. Thanks for reply!

 

[Dmagna]

Varget is way too fast for for a 90 gr bullet. Need h4350 or slower, I use rl26, h1000, n560, n565, n570. All have worked, the barrel twist might not work I don't know. I have absolutely no interest in shooting atips.

 

[cjens]

I'll keep those in mind if they are out of 4350. I did find a jar imr4831any thoughts on that? If I remember right that's a slow burner.

 

[Greatgrandad]

Hey y'all recently got a 22 creedmoor built. 18inch barrel 1-8 (supposed to 1-7 twist). Anyways already ordered some 90 a tips and I have a lot of varget powder laying around and wonder if anyone has some load data with varget and heavier bullets? I'm thinking maybe it's too fast burning should go restock on some h4350. Yes scope is not even attached.

I run a 1/8" twist, and it stabilizes the 88 ELD's. I haven't tried the 90 ATip, for I think it will not work with the 8" twist. I would try a few slower powders than Varget. I run H4350, H1000, RL26 and 7828SSC.

 

[Beluebow]

If you run the numbers on Berger's stability calculator the 90's are down around 1.06 with an 8twist at sea level and 59degrees 3100fps. Once you start getting below about 1.20 you're gonna have some issues. I would look at selling or trading for some 80.5 or something in that area.

Berger Stability Calculator

 

[VinceMule]

Sell the 90s, buy 80.5g Bergers

 

[Varmint Hunter]

This is from Hodgdon's website - however, those 90gr bullets are a waste of time and powder in an 8 twist.
Trade the 90s for a bullet that you can use. Try some inexpensive Hornady 80 ELD-M bullets.
Good luck.

Bullet: 90 GR. HDY A-TIP

Diameter: 0.224"

Case: Alpha

Primer: Winchester LR, Large Rifle

Starting Load

Maximum Load

Availability

Manufacturer

Powder

C.O.L.

Grs.

Vel. (ft/s)

Pressure

Grs.

Vel. (ft/s)

Pressure

Ramshot

Magnum

2.700"

42.5

2,833

48,000 PSI

46.2

3,107

59,900 PSI

Buy Now

Winchester

StaBALL HD

2.700"

42.0

2,819

46,700 PSI

46.0

3,116

61,400 PSI

Buy Now

Ramshot

Grand

2.700"

41.7

2,893

46,000 PSI

45.8

3,177

59,100 PSI

Buy Now

Hodgdon

Retumbo

2.700"

42.1

2,840

49,600 PSI

45.0C

3,058

60,300 PSI

Buy Now

Accurate

Magpro

2.700"

40.3

2,759

47,300 PSI

43.9

3,041

60,000 PSI

Buy Now

Hodgdon

H1000

2.700"

39.5

2,804

48,800 PSI

43.0

3,049

60,400 PSI

Buy Now

IMR

IMR 7977

2.700"

39.3

2,750

47,900 PSI

42.8

3,013

61,500 PSI

Out of Stock

IMR

IMR 7828 SSC

2.700"

37.5

2,818

48,900 PSI

40.8

3,071

61,600 PSI

Out of Stock

Hodgdon

H4831

2.700"

36.8

2,840

51,100 PSI

40.0

3,048

61,500 PSI

Out of Stock

Hodgdon

Superformance

2.700"

35.8

2,789

48,000 PSI

39.0

3,042

60,500 PSI

Buy Now

IMR

IMR 4955

2.700"

35.8

2,770

49,200 PSI

39.0

3,008

61,400 PSI

Out of Stock

Ramshot

Hunter

2.700"

34.9

2,712

48,400 PSI

38.0

2,961

60,600 PSI

Buy Now

IMR

IMR 4831

2.700"

34.7

2,774

50,400 PSI

37.8

2,987

60,000 PSI

Out of Stock

Expand All

Collapse All

 

[waspocrew]

Agreed - sell the 90's and pick up some projectiles that will work with your twist rate. 88 ELDMs work great in my 1:8 22-250 AI. For my 22-250 AI and 22 Creed, the powders I tend to use are: RL-23, RL-26, H4831, and H4350.

 

[cjens]

Well got some h4350 and 80vld bergers I guess wish me luck.

 

[RegionRat]

Here is what the folks were trying to tell you about the 8 twist and the 90 ATip.

You would want an SG at 1.4 or greater for the project to be worth the trouble. You can see that the SG with this would run too low and you would statistically find your shots going keyhole.

While many have tried to go below an SG of 1.4, the closer you are to 1.0 the worse things get for you.

Now, run that at 7 and you would get an SG of 1.36.

Since gyroscopic stability models are really just parametric studies and not based on exact equilibrium physics, you can only use them as rules of thumb but the ground has been beaten down over many years. You can get a post where someone gets stability at values below 1.4, but you can also get reports of folks with problems at 1.3. In effect, we can say that somewhere between 1.4 and 1.0 is not where you want to be unless you are accepting the risks. Your 7 twist is right at that point where the majority of users have success and failure have been rare.

It is bullets like the 90s that are the reason for those 224 barrels to show options for 6.5 twist.

BTW, the 88 ELDM with a 7 twist is an SG of 1.4
The 8 twist with the 88 ELDM is 1.07 and also not recommended. However, even those 80 ELDM at an 8 twist are SG of 1.22 and will often not work.
The Berger 80 VLD is an SG of 1.34

 

[Greatgrandad]

Here is what the folks were trying to tell you about the 8 twist and the 90 ATip.

You would want an SG at 1.4 or greater for the project to be worth the trouble. You can see that the SG with this would run too low and you would statistically find your shots going keyhole.

While many have tried to go below an SG of 1.4, the closer you are to 1.0 the worse things get for you.

Now, run that at 7 and you would get an SG of 1.36.

Since gyroscopic stability models are really just parametric studies and not based on exact equilibrium physics, you can only use them as rules of thumb but the ground has been beaten down over many years. You can get a post where someone gets stability at values below 1.4, but you can also get reports of folks with problems at 1.3. In effect, we can say that somewhere between 1.4 and 1.0 is not where you want to be unless you are accepting the risks. Your 7 twist is right at that point where the majority of users have success and failure have been rare.

It is bullets like the 90s that are the reason for those 224 barrels to show options for 6.5 twist.

BTW, the 88 ELDM with a 7 twist is an SG of 1.4
The 8 twist with the 88 ELDM is 1.07 and also not recommended. However, even those 80 ELDM at an 8 twist are SG of 1.22 and will often not work.
The Berger 80 VLD is an SG of 1.34
View attachment 622642

We've been shooting the 80 (AMAX and ELDM) and 88's for many years in 1/8" twists without any issues.

 

[cjens]

Here is what the folks were trying to tell you about the 8 twist and the 90 ATip.

You would want an SG at 1.4 or greater for the project to be worth the trouble. You can see that the SG with this would run too low and you would statistically find your shots going keyhole.

While many have tried to go below an SG of 1.4, the closer you are to 1.0 the worse things get for you.

Now, run that at 7 and you would get an SG of 1.36.

Since gyroscopic stability models are really just parametric studies and not based on exact equilibrium physics, you can only use them as rules of thumb but the ground has been beaten down over many years. You can get a post where someone gets stability at values below 1.4, but you can also get reports of folks with problems at 1.3. In effect, we can say that somewhere between 1.4 and 1.0 is not where you want to be unless you are accepting the risks. Your 7 twist is right at that point where the majority of users have success and failure have been rare.

It is bullets like the 90s that are the reason for those 224 barrels to show options for 6.5 twist.

BTW, the 88 ELDM with a 7 twist is an SG of 1.4
The 8 twist with the 88 ELDM is 1.07 and also not recommended. However, even those 80 ELDM at an 8 twist are SG of 1.22 and will often not work.
The Berger 80 VLD is an SG of 1.34
View attachment 622642

I like the science! Thank you!