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Campfire Outfitter
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Campfire Outfitter
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Thought that was called a 222 Remington Mag?
Swifty
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Campfire Regular
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Campfire Regular
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Thought that was called a 222 Remington Mag? About the same difference as a 7mm JRS compared to 280 Improved 
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Campfire Ranger
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Thought that was called a 222 Remington Mag? It is.......if you consider a case body with less taper, a sharper shoulder, and said shoulder blown forward .075" the same......
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Campfire Ranger
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Campfire Ranger
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Campfire Regular
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Campfire Regular
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Picture on brass box, looks like a 22x57 - 6mm Rem, Creedmoor 30 Improved
Drawing on AS looks like .22-6.8SPC
Speculation is rife !
Last edited by 338Rules; 01/05/17. Reason: Looked at AS Drawing
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Campfire Tracker
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Campfire Ranger
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Picture looks like a 22x57 - 6mm Rem, Creedmoor 30 Improved Too big.....57mm = 2.244" I'm guessing a 6 Hagar necked down. Claim is 70's at 3300.
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Campfire Regular
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Campfire Regular
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Should of standardized the 22creedmore
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Campfire Kahuna
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Campfire Kahuna
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You mean do the .22-250 Improved all over again?
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Campfire Ranger
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Believe it's to be geared towards the AR-15 platform.....
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Campfire Regular
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The Creedmoor is even more Improved with a .462" shoulder diameter vice .454" for the AI. Angle is 30 degrees vice 40.  So it is the .22-250 Creedmoor Improved 30 Should add that this isn't that
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Campfire Sage
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Campfire Sage
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Picture looks like a 22x57 - 6mm Rem, Creedmoor 30 Improved Too big.....57mm = 2.244" I'm guessing a 6 Hagar necked down. Claim is 70's at 3300. Is the diameter of the Hagar between a .223 and a 22-250? Seems like it uses a non-standard parent case. Dave
Trump being classless,tasteless and clueless as usual. Sorry, trump is a no tax payin pile of shiit. My young wife decided to play the field and had moved several dudes into my house
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Campfire Kahuna
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Campfire Kahuna
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338Rules,
I didn't say .22-250 Ackley Improved, I said .22-250 Improved. The Creedmoor case is so close to the old .22-250 RCBS Improved (which had a 28-degree shoulder) that a .22 Creedmoor just might fit in the chamber, with all the attendant problems of varying chamber and, especially, throat dimensions.
Sometimes that causes factories to back off from standardizing certain wildcats, and sometimes it doesn't.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Campfire Regular
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As usual you are spot on, John. The RCBS Improved 28 degree shoulder is awfully close to the current 30 degrees that is in vogue. My main point was the extra shoulder diameter of .462" in the Creedmoor shoulder geometry, which in turn contributes to the case volume. Happy New Year !
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Campfire Ranger
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Campfire Ranger
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I'm guessing that it is a necked down Hagar.
"The 6mm HAGAR was derived from the 30 Remington and it has the same case head diameter as the 6.8 SPC, also a 30 Remington derivative."
Thus, a necked down 6.8SPC by most accounts, though the Hagar case is a decent bit longer than the SPC.
Last edited by DakotaDeer; 01/05/17.
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Campfire Ranger
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Campfire Sage
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Campfire Sage
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I'm guessing that it is a necked down Hagar.
"The 6mm HAGAR was derived from the 30 Remington and it has the same case head diameter as the 6.8 SPC, also a 30 Remington derivative."
Thus, a necked down 6.8SPC by most accounts, though the Hagar case is a decent bit longer than the SPC. Interesting. Travis
Trump being classless,tasteless and clueless as usual. Sorry, trump is a no tax payin pile of shiit. My young wife decided to play the field and had moved several dudes into my house
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Campfire Ranger
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Campfire Ranger
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Picture looks like a 22x57 - 6mm Rem, Creedmoor 30 Improved Too big.....57mm = 2.244" I'm guessing a 6 Hagar necked down. Claim is 70's at 3300. Is the diameter of the Hagar between a .223 and a 22-250? Seems like it uses a non-standard parent case. Supposedly uses a #10 shell holder, meaning a rebated rim.....
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Campfire Oracle
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Campfire Oracle
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Seems like it uses a non-standard parent case.
Dave
Yes it sure does...I wonder if it will do what a .223AI will do? 
"...the left considers you vermin, and they'll kill you given the chance..." Bristoe
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