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waterman
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Bad idea?
Yesterday at 6:06pm
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I have a 1902 roller, 7 x 57, with a bad barrel, a sorta heavy half octagon unchambered .224 barrel of unknown origin, and a Lyman Alaskan scope.   

Been thinking about something that would use milsurp 5.6 mm ammo.  Bad idea?
  
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Bulseyetom
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Re: Bad idea?
Reply #1 - yesterday at 7:45pm
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My thought that a 223 in a Roller is not a good idea.  My vote would be a 219 Zipper or since it is something you would have to reload for maybe a 219 Zipper Improved.  Back around 1961 or so my dad contacted P O Aclkey about a #5 Roller and he recommended a 22-250.  Now that was before that cartridge was commercially available, but I think that would have been an accident waiting to happen.  Tom
  
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Chris W
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Re: Bad idea?
Reply #2 - yesterday at 10:00pm
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I’ve got a high wall that was done in 22 Hornet, it’s definitely fun to shoot!
  
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frnkeore
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Re: Bad idea?
Reply #3 - Today at 3:33am
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I think it's something you'd just have to try. I wouldn't consider it dangerous, per se but, it could stretch the cases. That's what happens when the RB reaches it's thrust maximum.

I'd make sure the head space was tight and that the breech block is square.
  
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4060may
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Re: Bad idea?
Reply #4 - Today at 10:02am
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rotary or sliding extractor?
I have a take off barrel in 22 k-hornet, sliding extractor
for the shipping if you can use it
lot of snow here , take a couple of days for a pic
  
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gewehrfreund
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Re: Bad idea?
Reply #5 - Today at 11:12am
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If you use the 224 barrel, how about a 222 Rem or 218 Bee?

Otherwise, I'd consider reboring the original barrel to 30-30, etc.
  
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marlinguy
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Re: Bad idea?
Reply #6 - Today at 2:16pm
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When you begin to push Rolling Block actions you not only get heads[ace issues, but you also ruin brass. Since the block rolls back it creates an angle to the bore which makes the rims bend at an angle. Once that happens there's no fixing the brass, and it wont chamber again without being oriented the same way it was when the rims bent.
Best to keep Rolling Block pressures under 25,000 psi, and avoid issues.
  
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