The 22 Creedmoor

Can you fire standard (not AI) 22-250 ammo through a 22 Creedmoor chamber? The shoulder to neck junction looks identical in side-by-side photos. If so, the 22 Creedmoor is a 30° Improved 22-250 and there you have it: factory ammo. Can anyone who owns a 22 Creedmoor confirm this?
 
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rifleman762 said:
Can you fire standard (not AI) 22-250 ammo through a 22 Creedmoor chamber? The shoulder to neck junction looks identical in side-by-side photos. If so, the 22 Creedmoor is a 30° Improved 22-250 and there you have it: factory ammo. Can anyone who owns a 22 Creedmoor confirm this?
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I've fire formed 22-250 lapua brass to make 6.5 creedmoor cases.
 
rifleman762 said:
Can you fire standard (not AI) 22-250 ammo through a 22 Creedmoor chamber? The shoulder to neck junction looks identical in side-by-side photos. If so, the 22 Creedmoor is a 30° Improved 22-250 and there you have it: factory ammo. Can anyone who owns a 22 Creedmoor confirm this?
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I've read of people doing this. I'd imagine a lot of case stretch will occur in the web.
 
remington jim said:
Tikka Makes the T3X in 22-250 now with a 8 Twist ! RJ
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Gatehouse said:
Anyone that cares about a 8 twist 22-250 would be better served by a 22CM
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remington jim said:
I Agree ! I was just answering Jim870's comment - Also It might a a while too before the 22 CM is avail from a lot of manufactures ! The 22-250 Rem AI DOES Rival the 22 CM in Peformance ! ;) RJ
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I checked tikka's website and it doesn't reflect a 1-8 twist 22-250 being currently available. Browning is now offering a 1-9 twist(perhaps good enough) for most models of factory xbolts in 22-250 and Ruger's American is still a 1-10, so while 80+ grain bullets may be out there are plenty of great 75 grain bullets that can satisfy most wants. But hopefully wisdom will spread since all the special runs of 1-8 twist 22-250's sell like hotcakes and it will take root.
As to being better served by a .22 creedmoor than a 1-8 twist 22-250 other than being able to walk into any place that has any reloading gear and being able to buy brass and dies right off the shelf with no waiting you are probably right and lets not forget no fire forming. Now to get a 1-8 twist 22-250 there's probably going to be enough wait that getting dies and brass ordered probably won't be an issue so guess that is kind of a toss up.
Performance wise, yes, the .22 Creedmoor wins but I am setup already for 22-250 and sling heavies in my 223's so to get a faster twist spout for a .22-250 I would be ahead and have most of the performance. I suspect I am not alone in this regard. If the fast .22-250 needs too much trimming, or doesn't have enough go fast a creedmoor reamer should clean up the chamber.
 
Some results from yesterday :

75gr Hornady Amax @ 2.63" (.114" off lands)
Alpha brass (large rifle primer)
Federal 210M primer

-15c



  • IMR 4451 39.3grs ~ 3256 fps, 1.6moa 3 shot 167 yards
  • IMR 4955 43.2grs ~ 3381 fps, 0.6moa 3 shot 167 yards
  • IMR 7977 46.2grs ~ 3226 fps, 0.8moa 3 shot 167 yards
  • Accurate Magpro 47.2grs ~ 3282 fps, 1.4moa 3 shot 167 yards
  • Ramshot Magnum 48.7grs ~ 3359 fps, 0.9moa 3 shot 167 yards
  • Reloader 16 41.0grs ~ 3426 fps, 1moa 3 shot 167 yards
  • Reloader 17 41.0grs ~ 3384 fps, 1moa 3 shot 167 yards
  • Reloader 26 45.0grs ~ 3392 fps, 0.8moa 3 shot 167 yards
  • VihtaVuori N560 45.6grs ~ 3307 fps, 0.7moa 3 shot 167 yards
  • Winchester 760 41.4grs ~ 3293 fps, 0.5moa 3 shot 167 yards
 
Today's resuts :

75gr Hornady Amax @ 2.63" (.114" off lands)
Alpha brass (large rifle primer)
Federal 210M primer

-3c



  • H4350 41.4grs ~ 3403 fps, 0.8moa 3 shot 175 yards
  • H4831sc 44.2grs ~ 3302 fps, 0.9moa 3 shot 175 yards
  • IMR 4955 43.6grs ~ 3453 fps, 1.4moa 3 shot 175 yards
  • Accurate Magpro 47.7grs ~ 3328 fps 1.0moa 3 shot 175 yards
  • Ramshot Hunter 42.7grs ~ 3340 fps 2.1moa 3 shot 175 yards
  • RL17 41.8grs ~ 3499 fps 0.8moa 3 shot 175 yards
  • RL19 43.2grs ~ 3344 fps 0.9moa 3 shot 175 yards
  • RL22 45.1grs ~ 3452 fps 1.5moa 3 shot 175 yards
  • RL23 43.3grs ~ 3472 fps 1.2moa 3 shot 175 yards
  • RL26 45.5grs ~ 3467 fps 0.6moa 3 shot 175 yards
  • Win760 41.2grs ~ 3299 fps 0.9moa 3 shot 175 yards


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Today's resuts :

75gr Hornady Amax @ 2.63" (.114" off lands)
Alpha brass (large rifle primer)
Federal 210M primer

-9c




  • RL16 41.4grs ~ 3490 fps, 1.1moa 3 shots 199 yards
  • RL17 41.8grs ~ 3499 fps, 0.5moa 2 shots 199 yards
  • RL26 46.0grs ~ 3550 fps, 0.8moa 3 shots 199 yards
  • IMR 4451 40.1grs ~ 3386 fps, 1.3moa 3 shots 199 yards
  • Ramshot Magnum 49.2grs ~ 3448 fps, 1.3moa 3 shots 199 yards
  • Win760 40.9grs ~ 3293 fps, 0.9moa 3 shot 199 yards


Have 100 rounds of fired brass now.
 
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