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Old 11-21-2020, 03:30 PM
FredJ_2008
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Mark IV Head Space



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Is there a preferred HS for the Mark IV?
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  #2  
Old 11-21-2020, 04:38 PM
JStacy
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Good question for Randy at CPC.
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Old 11-21-2020, 05:34 PM
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Cool

Quote:
Originally Posted by FredJ_2008 View Post
Is there a preferred HS for the Mark IV?
Ruger Bolt 22 LR HEAD SPACE SAMMI SPECS (Bolt's Breach Face to Cartridge Rim Face Depth) are minimum of .043" to a maximum .051". My 16 Ruger Bolt HS's (Standards, MkIs, MkII's, MkIV's) are between .045" and .047"!

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File Type: jpg 22LR SAMMI Cartridge Specs-Pg #14.jpg (237.1 KB, 4 views)
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Last edited by Theo98; 11-21-2020 at 10:03 PM.
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  #4  
Old 11-21-2020, 06:34 PM
FredJ_2008
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Thanks. I measured mine, and it's .0431", so I guess I'm OK.
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Old 11-22-2020, 12:10 AM
JStacy
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Theo great drawing ! Is the chamber shown here a standard "sporting " chamber or the semi auto Benz match chamber ? I thought the "sporting" chamber was .230 in the rear ?
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Old 11-22-2020, 02:33 AM
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Yep. Drawing is of the match chamber. Sporting is .2307" at the rear.
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