The 22 creedmoor thread

[amassi]

This is why I still haven't ordered my barrel, 3 days of argueing with myself between the 7 and 8. Might have to rethink manufacturers and find a 7.5. I know guys are shooting the 80s from 8 twists and having success but every way I've calculated it even they have marginal stability at low temp/ elevation and the 88s are a no go. Between spring bear hunting estuaries and nov/dec blacktail hunting on Vancouver island its commonly freezing or below at sea level to 500ft. The point of this build is to shoot heavy for caliber I don't want to be stuck in the 75 gr range of bullets

Just get the 1:7
Don’t make it any harder than it needs to be


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[ACHILLES]

Is that really the difference? Will an arc do 3500? When it’s put that way, 4x barrel life makes 120 FPS difference seem pretty insignificant.

That’s with Peterson brass With Hornady or alpha they run 3070 it’s only a 100fps diff. But give the creed a 20” Bbl and it becomes 2930fps vs 3250fps.

Guys that have shot out multiple 22br barrels in prs running them with 88s & 90s seem to pull them around 3k but they’re still shooting though. The Br case has a 1-2gr more capacity than the arc. Arc has a lot more barrel life than the creed but it’s using 15gr less powder than the creed.

I would venture to say if Forms t3 223rem can still shoot well with 30k+ rounds through the barrel that the arc can make it to 3500 with a quality barrel.

 

[huntnful]

Components are starting to show up

Build is going to be
Defiance Ruckus DLC’d
MDT XRS Chassis
Muller Works 1-8 twist #5 finished at 25-26”. No Muzzle threads.
Bix N Andy tac sport

Hopefully it drives tacks so I can test what prep work directly affects accuracy in larger sample sizes as well. The whole goal will be shoot out the barrel, while learning what matters with brass prep and loading, and what doesn’t matter. I feel like I have an idea, but would like to see it first hand with larger sample sizes.

Also going to do a ton of field shooting drills probably 800 yards and in, and track that progress as well.

 

[waspocrew]

Components are starting to show up

Build is going to be
Defiance Ruckus DLC’d
MDT XRS Chassis
Muller Works 1-8 twist #5 finished at 25-26”. No Muzzle threads.
Bix N Andy tac sport

Hopefully it drives tacks so I can test what prep work directly affects accuracy in larger sample sizes as well. The whole goal will be shoot out the barrel, while learning what matters with brass prep and loading, and what doesn’t matter. I feel like I have an idea, but would like to see it first hand with larger sample sizes.

Also going to do a ton of field shooting drills probably 800 yards and in, and track that progress as well.
View attachment 759906

Nice pile of projectiles! Should definitely last you a while.

 

[Lawnboi]

Components are starting to show up

Build is going to be
Defiance Ruckus DLC’d
MDT XRS Chassis
Muller Works 1-8 twist #5 finished at 25-26”. No Muzzle threads.
Bix N Andy tac sport

Hopefully it drives tacks so I can test what prep work directly affects accuracy in larger sample sizes as well. The whole goal will be shoot out the barrel, while learning what matters with brass prep and loading, and what doesn’t matter. I feel like I have an idea, but would like to see it first hand with larger sample sizes.

Also going to do a ton of field shooting drills probably 800 yards and in, and track that progress as well.
View attachment 759906

Since you seem to like nice things….

SAC sizer with an expanding decapper mandrel. One pull does it all.

 

[Lawnboi]

Got a group in with the 80eldx.

10 shot, decent SD, non issue for a 500 yard rifle.

42 h4831sc, alpha srp brass going 2955 average.

I’m guessing my LRP brass will yield another 30-40 fps like everything else.

Need to slap on my nx8, hard to shoot small groups with the shv, and if I’m going to hunt with this I’m putting the nx8 on.


H4831sc is what I’d go with for powder going forward, atleast for now I like to load. This load is moisture/heat safe in my rifle. And much easier on the brass.


At 6500’ this is now an 8mph rifle out to 500 yards and is a full half mil flatter than the 223(w 75eldm). The tmk numbers are even worse for the 223.

A 20” 7.5 twist sending the 80 eldx at 3100+ is appealing…

 

[swavescatter]

I'd appreciate everyone's opinion in a thread on my build here:

22 Creedmoor Custom Build - Do I Send It Back???

So a rifle build I've been waiting 8 months for finally showed up, and I have questions. 22 Creedmoor is a new cartridge for me, so I'd appreciate a sanity check. I specified in the build that I wanted it throated for 88 ELDM's, and that was listed on the build invoice. SAAMI Max COAL is 2.7" I...

rokslide.com

Thanks in advance...

 

[SouthPaw]

Got a group in with the 80eldx.

10 shot, decent SD, non issue for a 500 yard rifle.

42 h4831sc, alpha srp brass going 2955 average.

I’m guessing my LRP brass will yield another 30-40 fps like everything else.

Need to slap on my nx8, hard to shoot small groups with the shv, and if I’m going to hunt with this I’m putting the nx8 on.


H4831sc is what I’d go with for powder going forward, atleast for now I like to load. This load is moisture/heat safe in my rifle. And much easier on the brass.


At 6500’ this is now an 8mph rifle out to 500 yards and is a full half mil flatter than the 223(w 75eldm). The tmk numbers are even worse for the 223.

A 20” 7.5 twist sending the 80 eldx at 3100+ is appealing…
View attachment 760256

Nice, that will kill. I like H4831sc for the 79/80g too. 42.5g shoots the 79g DRT and 80g ELDM around 3200 in my 20" 7.5tw.

 

[Lawnboi]

Seeing Hornady load speeds with 62 eldvt…. I think after big game seasons finish up I’ll be trying for 3400.

 

[sportsmans challenge]

Seeing Hornady load speeds with 62 eldvt…. I think after big game seasons finish up I’ll be trying for 3400.

With 223 or creed?

 

[Lawnboi]

With 223 or creed?

Creed. Though it is a cool bullet in the 223 as well.

 

[sportsmans challenge]

Creed. Though it is a cool bullet in the 223 as well.

I think with varget working up from about 39grains I bet you'll see 3500+

 

[david2duck]

Took my WTO Tikka out to some distance today. Adjusted half MOA after those shot and had 2 center impacts.

 

[justin davis]

Any use super performance powder?

 

[Bluumoon]

Any use super performance powder?

Waiting on my build to get back, bought a bunch of Ramshot Grand I’m hoping works w the 80 ELDMs. That Powder is down to $30 lb on Midway at the moment.

 

[mxgsfmdpx]

Results from 80 ELDX on a moose yesterday from my 22 Creedmoor…

Post in thread '.223 for bear, mountain goat, deer, elk, and moose.'
https://rokslide.com/forums/threads...n-goat-deer-elk-and-moose.130488/post-3799691

 

[Miflatlander91]

I would say that absolutely did it’s job!


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[4090Sharps]

As expected, underwhelming speed. Accuracy was great, speed was not.

16.5” 1:8 barrel (Tikka 223 originally)
Peterson LRP Brass
CCI 34 primer (magnum)
88gr ELD-M
39.3 gr Superformance (guesstimate right around max Hodgdon book load)
2660 fps average

Based on Hodgdon’s data, this load should produce somewhere around 3050 fps out of a 24” barrel, so I would have expected 2750-2800 fps.

Now that Hornady has released load data and I have more rounds on the barrel, I took another crack at this today.

Hornady lists a max load of 41.5 gr Superformance for the 88 ELD-M, going 3150 fps out of a 24” barrel.

41.0 gr got me a 2889 fps average with a 100 yard 10 shot group right under an inch. Spread of 43.5 fps, standard deviation of 17.2.

Not a max load, but that puts me at roughly a 30 fps loss per inch of barrel cut. Right where I expected to be with this rifle. My prior disappointment is now gone.

 

[ID_Matt]

Interesting comparing the hornady load data to the Peterson testing that was done. Peterson shows 42.5 grains of RL 26 with a 75 eldm at 62K PSI in a universal receiver…. Hornady max load with the same is 47.7 grains. That is a SUBSTANTIAL difference

 

[ACHILLES]

Peterson brass has less capacity so data is going to be slightly different. But I agree the differences with rl26 and superformance seem vastly different with the 75gr.
Maybe just the difference between barrel bore diamters .218vs.219, freebore difference, different powder lots, difference between Hornady & peterson brass internal capacity, and possibly different barrel brands between the test barrels used by Peterson and Hornady.

With my 18” and h1000 with 80elds

42.5gr 3050fps peterson brass
43.5gr 3070fps Hornady brass