22-250 or 6mm Creedmoor?

[284winner]

If you want to pick high bc 22's like the 88ELD then compare apples to apples and compare the the high bc 6mm's like the 110SMK and the 115 DTAC. A 6 Creed can push 110SMK's and 115DTAC's at 3100. Both have right at .620 BC. At a thousand yards the 6mm has 2moa less drop and a little over 1 moa (about 12") less wind drift in a 10 mph cross wind.

If you compare more common bullets like the 105-108 6mm's to the 80gr range 22's the difference grows considerably larger in favor of the 6mm.

I shoot mostly 600 and 1K F Class. What's "close" or not is subjective but a 12" wind advantage in my shooting disciplines would be considered not even close. And this best a case scenario, again, when you compare 105-107 6mm's to the 80gr range 22's the difference grows even more in favor of the 6mm's.

If your only shooting to 500 yards you could call it close enough, but the OP's criteria was out to 1K. And don't get me wrong, I like the 22-250 especially the AI version, but when when you throw in that 1K distance there's a good reason why we go up to 6mm's and larger. Because it ain't even close..

I only compared what bullet I was given which was the 105. I the went to the 88 rather than a 95 smk. Thought I kinda did a fair comparison. It's really a senseless thread to Carry on the difference between the two. My comment doesn't defend the 224 as the better performing round. It only defends it as a closer comparison than it's been given by another. Of course the 6 Creedmoor is ballistically superior. It ought to be. Its not night and day by using the 105 vs 88. Many have chosen the high BC .224 bullets over farily high bc 6mm bullets due to the recoil and shootability of the 22. Not alot different than comparing the 300 NM to the 338 Lapua Mag. Just a much larger comparison. Fun,varmints, plinking etc. If it was for serious shooting or competition, it really wouldn't be a tough decision.

 

[284winner]

Don't know where your getting your data;i shoot a 6 creed 105 RDF nosler,at 1000 yards Drop is 243" {LESS };Energy is 689 foot pounds a lot more than Any 22/250

Sorry using the 105 rdf vs 88 eld, drop is less(at 1000) with the .224 bullet while energy is better by just over 100 ft lbs with the 105s. If 100 ft lbs is alot more for varmints and targets, then I guess to each there own. I think not. Again, I'd play with the 224 at the 400-1000 yards any day without feeling under gunned to the 6 Creedmoor based on the 105 range bullet used. Unfortunately the 9 twist really won't stabilize those 88s so it's irrelevant. I think the OP said he had a choice between the .22-250/9 twist and 6 Creed/8 twist.

 

[284winner]

Gotta be honest. I shoot the 22-250 AI so much if not all my opinions are based on that cartridge. I understand the 22-250 in its straight version lacks something that the AI version has. Still the 22-250 is a blast to shoot out to 1000

 

[wbm]

The 6 Creed shooting 105-108 range bullets has a huge ballistic advantage over a 22-250 at long range. It's not even close.

and as they say in no BS english! "There you have it!"

 

[fyrewall]

Sort of like comparing tangerines (sweet .22-250) with oranges (more juice 6CM).

A 9 twist .22-.250 would not compete with the 8 twist 6CM. The really nice .224 long range bullets for the .22-250 need a 7-8 twist. I am a real .22-.250 fan and have killed many more rodents with it than any of my fast twist 6mm's because the .22-.250 is more user friendly. A 9 twist .22-.250 would exclude the 75 Hornady ELDM. The Bergara rifle might not have a magazine long enough to handle relatively long 75 grain Hornady ELDM or Berger 75 VLD bullets should a new barrel be installed. Most likely a Bergara 6 CM magazine hardware would handle the 75 grain .22-.250 loads. There are .224 bullets weighing more than 75 grains that would work with a 7-8 twist .22-.250. My three .22-250's have 7.7 twist barrels

A simple suggestion is to check the long range ballistics with optimum weight long range bullets. Run both Hornady & Berger calculators. Hit the blank box next to "standard" to run the Hornady 4DOF calculator

https://www.hornady.com/team-hornady/ballistic-calculators/#!/

https://bergerbullets.com/ballistics-calculator/

Run both the Hornady 4DOF calculator and Berger calculator with various .224 and 6mm bullets. See how these estimators show maximum stability with various twists.

 

[IdahoSharpshooter]

My project for 2020 is a quick twist, 1:7.5" 220 Swift. It is still the ultimate Live Varmint cartridge; now blessed with quality bullets and barrels, and LAPUA brass. I ran it on Berger's Ballistic Board, and it is the Cat's Pajamas...

 

[jthor]

Thanks for all the replies folks!! Probably going with the 6mm, but we will see once I’m back home.

 

[284winner]

Thanks for all the replies folks!! Probably going with the 6mm, but we will see once I’m back home.

You can't go wrong with either. The 6mm is doubtfully the best choice if 1000 yards is going to be much of your shooting. Given the twist options particularly. As stated above, to get full performance of any 22-250, you'd need a 7.5 twist. The 8 twist in the 6CM will give every optional bullet enough stabilization up to the 147s for sure. I shoot the 80 ELDs from my 8 twist 22-250 Ackley around 3550-3575 and it's literally a Lazer out to 1000+. Couldn't be happier. Weight is around 18 lbs and laying in an afalfa field pounding Ground hogs on next zip code hillsides is a blast. Recoil is so that I can watch impacts at any range. Get a heavy enough 6CM and you'll be able to as well
Good luck, John.

 

[22DASHER]

My project for 2020 is a quick twist, 1:7.5" 220 Swift. It is still the ultimate Live Varmint cartridge; now blessed with quality bullets and barrels, and LAPUA brass. I ran it on Berger's Ballistic Board, and it is the Cat's Pajamas...

How are you getting/making Lapua brass for the swift??

 

[284winner]

How are you getting/making Lapua brass for the swift??

To my knowledge Norma or Nosler would be the only two other than WW or Hornady.

 

[Gary in MD]

Yea, I got excited when I saw his post too. I just checked and don’t see Lapua listing Swift brass.
We can only hope....

 

[284winner]

With Swift's popularity today and the 22-250 AI being so desired, I doubt you'll ever see swift brass made by Lapua. Probably a better chance you'll see 22-250 AI brass made by them.

 

[22DASHER]

Better chance it will be 22 Creedmoor

 

[284winner]

Better chance it will be 22 Creedmoor

True

 

[fyrewall]

There you go Jthor, I read that you are a lefty, need to select either a 9 twist .22-.250 or a 8 twist 6mm CM, Bergara rifle, and I would guess that you need to get stuff underway soon (start shooting without a production - cheap available brass and dies, good bullets, ). A 9 twist .22-.250 will do very nicely like up to 1/4 mile with bullets like the .224 60 grain Sierra MK. 65 Si GK and the 53 grain .224 Hornady VMax. Classic .22-.250 loads are with lighter bullets and high velocities. My personal preference would be a Tangerine class * .22-.250 with a quick twist barrel between 7-8, shooting 75-80 plastic tip bullets and having a magazine long enough to handle a 2.8 inch long round - apparently that is not available in the Bergara.

That said, I would go with the 6mm CM. Lots of nice bullets, like 87 Vmax, 90 Sierra Game Changer, 105 Hornady hpbt, 103, 108 grain Hornady ELD's, and a bunch on Berger bullets. I have three 6mm rifles and have used most of these bullets. The 87 VMax should not be overlooked; a 8 twist is not optimum for this bullet but in my 8 twist rifles I get excellent accuracy and explosive expansion on rodents. Velocities with this easily available 87 grain VMax, moderate cost bullet out of a 6 CM should approach 3300 fps. The 105's should get 2950-3000 fps. Should you want to shoot deers the 6mm CM would be the better than a 9 twist .22-.250.

I have much interest in the 22 CM. Hornady has brass & dies. Possibly my next 22 might be the 22 CM but I have a wait and see perspective now.

Edit: The US Navy has vessels like a "Wasp-class amphibious assault ship" and I have Tangerine class, rodent rifles.

 

[onelastshot]

The twists you're suggesting indicate that you're considering heavier bullets and longer shots. For my 6mm, I've got a 6mmAI and shoot a 1-12 twist. I can shoot 75 grainers and get out 700-800- yards seeing 3,800 n velocity. Again with my 22-250 I shoot a 1-12 twist and have no problem shooting heavier bullets. If it's heavier bullets and longer ranges the 6mm will do what you're asking. If you're looking to shoot 1k, I opt for the 6mm, especially if your going for heavier varmints such as your Coyotte. The key difference will be recoil where the 22-250 your dealing with minimal recoil, your 6mm with the heavier bullets will produce significantly more recoil.

 

[IdahoSharpshooter]

My bad! I thought I had seen Swift brass available from LAPUA. RWS maybe...?

 

[284winner]

Hmmm. Not thinking RWS either. Company called Jamison used to make it. I figure there not around either. Not who else could make it today.

 

[nmkid]

My 22 Creedmoor at 3511 fps with 80 gr Noslers is all I need. I don't do comparisons.

 

[CaptainMal]

I flat out "love" my 22-250 AI. It would be a whole lot more popular with the masses if it was called...

22-250 AI Creedmoor.