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Normal Topic WTB 9.3x65R Collath brass (Read 199 times)
85lc
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WTB 9.3x65R Collath brass
Sep 6th, 2025 at 10:38am
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I am looking for 9,3x65r Collath brass.  Please PM is you have any that you would sell.
  
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Shanghai Jack
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Re: WTB 9.3x65R Collath brass
Reply #1 - Sep 6th, 2025 at 1:34pm
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You probably already know this but it looks like it can be easily formsed from 9.3x72R
  
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85lc
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Re: WTB 9.3x65R Collath brass
Reply #2 - Sep 6th, 2025 at 4:42pm
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Thank you.  The problem is that the head diameter of the 9.3x72 is 0.422" whereas the Collath case head is 0.443" or about 0.021" larger.

I might try fireforming some 360 BPE (9.3x57/360) but would rather get the Collath brass with the correct head diameter.   

BTW, my rifle is actually in 9.3x60R with other dimensions the same as the Collath.
  
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85lc
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Re: WTB 9.3x65R Collath brass
Reply #3 - Sep 7th, 2025 at 5:38pm
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Yes, The issue is that the head diameter of the 9.3x72r is a little small.  I can also form it from 360 2 1.4" BPE but again the head diameter is smaller than
  
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oneatatime
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Re: WTB 9.3x65R Collath brass
Reply #4 - Sep 7th, 2025 at 7:54pm
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Since the 9.3x72R case is a 360 case as, of course, the 360 2 1/4 is, I don't think you will gain much there. The head can be a bit small but blowing out the case evenly to fit the chamber can take care of that. That works fine with a modern 7x57 case in an old 7x57 Spanish rolling block does if you make a little effort to keep the expansion centered.
  
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85lc
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Re: WTB 9.3x65R Collath brass
Reply #5 - Sep 8th, 2025 at 10:42am
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Chauncey,
That is what I will do but hope to get correct brass at some time.  Always a search!!!
  
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