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Normal Topic No. 5 Rolling Block 7mm Barrel Thread Specs (Read 575 times)
curdog
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No. 5 Rolling Block 7mm Barrel Thread Specs
Jun 15th, 2024 at 9:16pm
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Looking for the barrel thread specification for a 7mm No.5 Rolling Block.
I thought I'd seen it here somewhere, but can't seem to find it now.
  
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bobw
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Re: No. 5 Rolling Block 7mm Barrel Thread Specs
Reply #1 - Jun 15th, 2024 at 9:44pm
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Don’t know if this is any help…..this one states it’s for a 7mm but is listed as a #1.
Bob
  
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curdog
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Re: No. 5 Rolling Block 7mm Barrel Thread Specs
Reply #2 - Jun 16th, 2024 at 7:29am
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Thanks Bob!
  
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craigster
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Re: No. 5 Rolling Block 7mm Barrel Thread Specs
Reply #3 - Jun 16th, 2024 at 10:59pm
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I believe all RBs (except rimfires) were square 12 TPI.
  
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marlinguy
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Re: No. 5 Rolling Block 7mm Barrel Thread Specs
Reply #4 - Jun 17th, 2024 at 9:53am
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craigster wrote on Jun 16th, 2024 at 10:59pm:
I believe all RBs (except rimfires) were square 12 TPI.


I think even rimfires were if made on the larger frames. I know my early #1 in .44RF is.
  
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craigster
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Re: No. 5 Rolling Block 7mm Barrel Thread Specs
Reply #5 - Jun 17th, 2024 at 12:12pm
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#4s were 21/32"-16.
  
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marlinguy
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Re: No. 5 Rolling Block 7mm Barrel Thread Specs
Reply #6 - Jun 18th, 2024 at 10:33am
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craigster wrote on Jun 17th, 2024 at 12:12pm:
#4s were 21/32"-16.


Yes, a whole different action than the #1 and #1 1/2 actions.
  
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