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Author Topic: 8x57JR vs 8x57JRS  (Read 963 times)

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Offline dougk

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8x57JR vs 8x57JRS
« on: November 07, 2011, 02:35:51 AM »
How can you determine id a drilling is a 8x57JR or 8x57JRS?
Is there a proof mark difference?  I dont want to do a chamber cast.

thanks
Doug

Doug
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Offline pastorp

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Re: 8x57JR vs 8x57JRS
« Reply #1 on: November 07, 2011, 04:56:01 AM »
Slug the bore...  ;)

Regards,
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Byron

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Offline Drilling Man

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Re: 8x57JR vs 8x57JRS
« Reply #2 on: November 07, 2011, 05:20:36 AM »
Quote from: pastorp on November 07, 2011, 04:56:01 AM
Slug the bore...  ;)

Regards,

  Yup, slug the bore...  Many JR's (.318") have large enough bores to use JRS (.323") bullets in them...  My old Krieghoff is one of them...
 
  EVERY old drilling should be "slugged" to see what the bore REALLY is!
 
  DM
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