22 creedmoor

[DIBBS]

@Roadrace33

Are you using the same lot # of powder, primers, and bullets as before when the rifle shot lights out?

My first thought was a carbon ring or barrel fouling, but you are currently addressing that potential issue.

Scope bases, rings, action screws all tight? Have you tried a different scope?

 

[Roadrace33]

@Roadrace33

Are you using the same lot # of powder, primers, and bullets as before when the rifle shot lights out?

My first thought was a carbon ring or barrel fouling, but you are currently addressing that potential issue.

Scope bases, rings, action screws all tight? Have you tried a different scope?

I have checked scope mount (Spuhr) and action screws. Did not check another scope. This is a brand new TT 7-35. Not that they are without issues, but I sincerely hope it does not have an issue.

Same lot of primers, same lot of bullets. Different lot of powder.

I did a really good clean on it. Will try a few of my regular charges tomorrow, with a new jug of 4350 and see what happens. A lot more copper than I anticipated pulled out of the barrel. Odd, because I cleaned it a good 4-5 times as normal. Nothing heavy, but few patches, few strokes of a brush after each shooting. Carbon ring looks much better.

 

[tekmann2377]

While some may disagree, if you were seeing velocities in the 3450+ range with H4350, I do think it may have just been too hot. Pushing an overbore cartridge like this is going to be tough to keep "in tune" if you are pushing pressure limits, the consistency just won't be there day to day.

 

[Roadrace33]

While some may disagree, if you were seeing velocities in the 3450+ range with H4350, I do think it may have just been too hot. Pushing an overbore cartridge like this is going to be tough to keep "in tune" if you are pushing pressure limits, the consistency just won't be there day to day.

Thanks, I do agree with this. However i am curious about the "too hot". How do you determine it? The lands have not eroded very much at all, if any. With a Hornady OAL tool, its within .001-.002 of how it was new. When its pushed around 3600-3650 i get heavy bolt lift, however in the 3400 range, bolt lift is completely normal.

3450 is very fast, and i do plan to tone it down to 3200 range. I'm embarrassed to say how dirty the bore was after letting c4 sit in there for about 8 hours. I'm fairly certain that this was the issue. After scrubbing the carbon ring, it is also so much better. Typically if i clean every 100-150 rounds, its more than enough.

I finally got some n555 to try, so that will be in the works as well to see how it goes.

 

[Roadrace33]

For reference, here is how it shot with just about any load I threw at it 3300fps and above. It seemed to get tighter and tighter up to 3450-3500fps, then decline slowly. This pic is also with 20mph cross winds, so it was pretty awesome.

It was hard to not love these groups, and I stuck with it. Those are .36 white squares and .72 orange.

We will see how it groups tonight or tomorrow. The plan is to find a good group with the VLDS, then try the 85.5 hybrids. Night coyote season has been done for a while here, and I don’t hardly do any hunting of them in the summer.

 

[solocam]

For reference, here is how it shot with just about any load I threw at it 3300fps and above. It seemed to get tighter and tighter up to 3450-3500fps, then decline slowly. This pic is also with 20mph cross winds, so it was pretty awesome.

It was hard to not love these groups, and I stuck with it. Those are .36 white squares and .72 orange.

We will see how it groups tonight or tomorrow. The plan is to find a good group with the VLDS, then try the 85.5 hybrids. Night coyote season has been done for a while here, and I don’t hardly do any hunting of them in the summer.

excellent group man. I was going to build a .22 creedmoor but went with the.22 Nosler instead. I can push a 80gr ELDM at 3100 fps with the Nosler. I would think the Nosler would have better barrel life than the.22 Creed as well, but time will tell. Care to share what rifle you have?

 

[Roadrace33]

excellent group man. I was going to build a .22 creedmoor but went with the.22 Nosler instead. I can push a 80gr ELDM at 3100 fps with the Nosler. I would think the Nosler would have better barrel life than the.22 Creed as well, but time will tell. Care to share what rifle you have?

This was just a test to see how I liked 22CM, but it is an Impact 737 sitting in a foundation Samson stock with a 28” 1.25 straight tube. If I choose the 22cm over a 6CM for hunting this winter, it’ll likely sit in a manners lrh stock and a much lighter contour barrel.

 

[Defender32]

A general question for those who know more than me on brass quality & this caliber.
Alpha or Peterson SRP 22 Creed. Is there a MAJOR difference in the 2 to make you choose one over the other? This is a predator a round for me and a buddy. possibly take a KY whitetail if need be. 70g-75g Bergers is what we plan to shoot. 500y is going to be a MAX distance for us and typically 300y and in for coyotes.

Peterson I have found in a few places and Alpha is out of stock.

 

[tbair]

A general question for those who know more than me on brass quality & this caliber.
Alpha or Peterson SRP 22 Creed. Is there a MAJOR difference in the 2 to make you choose one over the other? This is a predator a round for me and a buddy. possibly take a KY whitetail if need be. 70g-75g Bergers is what we plan to shoot. 500y is going to be a MAX distance for us and typically 300y and in for coyotes.

Peterson I have found in a few places and Alpha is out of stock.

I always prefer Alpha. SRP stands up to pressure well and the brass will easily go 10+ firings. Well worth the investment.

 

[barnesuser28]

I've been experimenting with faster powders in my 18" 22 creed. Shooting the 80 grain ELD-X with Varget and getting good speed, precision, and SDs. I hesitate to give the exact charge but I'll say 33ish grains should be a safe starting point with Alpha brass and a .1" freebore reamer.

 

[CShooter92]

I’m looking to build a 22 Creed but have a couple questions.

It’ll be a dedicated coyote rifle and I wanna shoot 75gr bullets. Thinking the ELD-M.
I’ve got a Proof carbon barrel cert that I’m going to use. Planning on a 22” for easy maneuverability, not suppressed. Should I go with a 7 or 8 twist?

Regarding brass, I have a cert for free Lapua brass. I was thinking of just getting 6mm creed and necking it down. I already have a 6.5 creed Type S die. Could I use this with a smaller bushing to size all my brass? Or should I be looking for a 22 creed die?

 

[mjspeers]

I’m looking to build a 22 Creed but have a couple questions.

It’ll be a dedicated coyote rifle and I wanna shoot 75gr bullets. Thinking the ELD-M.
I’ve got a Proof carbon barrel cert that I’m going to use. Planning on a 22” for easy maneuverability, not suppressed. Should I go with a 7 or 8 twist?

Regarding brass, I have a cert for free Lapua brass. I was thinking of just getting 6mm creed and necking it down. I already have a 6.5 creed Type S die. Could I use this with a smaller bushing to size all my brass? Or should I be looking for a 22 creed die?

I'd go 8 twist. If you'll use the Lapua cert on anything else, go with Alpha, it's good stuff. Shouldn't need to neck turn 6.5 necked down, but may have to.

 

[JFive]

I shoot 80gr ELD-M in a 8 twist and they shoot great, 8 should all you need for that bullet.
.252 bushing with Peterson brass.

 

[dirtbiker250]

I’m looking to build a 22 Creed but have a couple questions.

It’ll be a dedicated coyote rifle and I wanna shoot 75gr bullets. Thinking the ELD-M.
I’ve got a Proof carbon barrel cert that I’m going to use. Planning on a 22” for easy maneuverability, not suppressed. Should I go with a 7 or 8 twist?

Regarding brass, I have a cert for free Lapua brass. I was thinking of just getting 6mm creed and necking it down. I already have a 6.5 creed Type S die. Could I use this with a smaller bushing to size all my brass? Or should I be looking for a 22 creed die?

8 twist for sure. 75 eld’s are killer bullets! I run alpha 6 creed SRP necked down.. but if 22 is easier to find or whatever just run it. 40-41 gr h4350 should get ya accuracy and speed.

 

[Roadrace33]

I just got a 2nd 28” 7.5T straight 1.25 to play with. I used 22cm alpha brass on my first barrel. It was great. If I can get the 80VLDS to group consistently I’ll be using them to hunt coyotes.

 

[JR1200W3]

I’m looking to build a 22 Creed but have a couple questions.

It’ll be a dedicated coyote rifle and I wanna shoot 75gr bullets. Thinking the ELD-M.
I’ve got a Proof carbon barrel cert that I’m going to use. Planning on a 22” for easy maneuverability, not suppressed. Should I go with a 7 or 8 twist?

Regarding brass, I have a cert for free Lapua brass. I was thinking of just getting 6mm creed and necking it down. I already have a 6.5 creed Type S die. Could I use this with a smaller bushing to size all my brass? Or should I be looking for a 22 creed die?

On the die, yes. I would be most worried about resulting neck thickness or deformities like donuts from necking down thicker brass; the reamer used would probably determine the yes/ no on the brass.

If you can get the length of the 75 ELDMs without the plastic tip you can load that data into the Berger stability calculator and see how much twist is needed to stabilize. Outside of the bullet be stable I would try to go as slow a twist as possible. You get kinda pinched between twisting rate for stability and RPMs over spinning at the top end of the fast 22's. If you have any kind of altitude at all, the 8 twist will probably do the job best.

MV(12÷twist rate)60= RPMs. Stay under 290,000. Especially with Hornady bullets.

Here's an alternative thought. A 22GT has more than enough boiler room to spin a 75gr ELDM in excess of 290,000rpms and blow it up. I have both cartridges and I have to say, I like the GT better. The 22CM has a strange position in case capacity. Almost enough to use 4831SC but it's compressed and crunchy, 4350 is low fill. It really needs an in-between powder. But the GT is perfect for 4350. Besides that, what you get with the GT is brass and a reamer made or spec'd by the same company. So you have a higher likelihood of no-fuck-around load and go performance. I don't know if Alpha specs a 22CM reamer for it's brass, so you may find yourself neck turning to eliminate some artifact. Just a thought.

 

[Taylorbok]

8 twist for sure. 75 eld’s are killer bullets! I run alpha 6 creed SRP necked down.. but if 22 is easier to find or whatever just run it. 40-41 gr h4350 should get ya accuracy and speed.

I'd go 8 also. The 90 gr Bergers want 7 twist but they don't hold together at that so just drop down the bullet and spin em slower

 

[SupressYourself]

I’m looking to build a 22 Creed but have a couple questions.

It’ll be a dedicated coyote rifle and I wanna shoot 75gr bullets. Thinking the ELD-M.
I’ve got a Proof carbon barrel cert that I’m going to use. Planning on a 22” for easy maneuverability, not suppressed. Should I go with a 7 or 8 twist?

Regarding brass, I have a cert for free Lapua brass. I was thinking of just getting 6mm creed and necking it down. I already have a 6.5 creed Type S die. Could I use this with a smaller bushing to size all my brass? Or should I be looking for a 22 creed die?

The 75 ELDM is an excellent choice for coyotes. I shot 58 last season with that bullet, and maybe 3 or 4 even took another step.
8 twist should be fine. That's what I use. Check out Staball 6.5 for powder. Hornady load data shows it about 150fps faster than H4350, and while RL26 is faster yet, you can actually buy Staball right now, and a max charge actually fits in a Creed case. My testing so far with a new barrel lines up pretty well with their data.
I'm necking down 6mm Creed Lapua brass with an RCBS bushing die and .250 bushing. No problems.

 

[max1840]

Don’t overlook RL23 which is showing up recently for your 75’s

 

[Capitol5868]

An 8t, with 40-41gr of H4350 and the 75gr ELD-M seems to be where the magic happens. I’ve read about it all across the internet and Ive shot it. Its legit. Good speed and groups in 22 Creed.

 

[Cynical]

I’m looking to build a 22 Creed but have a couple questions.

It’ll be a dedicated coyote rifle and I wanna shoot 75gr bullets. Thinking the ELD-M.
I’ve got a Proof carbon barrel cert that I’m going to use. Planning on a 22” for easy maneuverability, not suppressed. Should I go with a 7 or 8 twist?

Regarding brass, I have a cert for free Lapua brass. I was thinking of just getting 6mm creed and necking it down. I already have a 6.5 creed Type S die. Could I use this with a smaller bushing to size all my brass? Or should I be looking for a 22 creed die?

There is a slight neck length difference in the SAAMI spec between 6.5 creedmoor and 22 creedmoor. I’m assuming that’s a function of the length of angle needed to go from the case body width to a smaller neck of the 22 creed. Regardless, I know a lot of people neck down brass for 22 creed but I don’t know that I’d go that route since alpha (and Hornady for that matter) have factory brass available. And I find it nice to have proper head stamps on my brass.