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Hot Topic (More than 10 Replies) Loads for a .45-70 BPCR (Read 7420 times)
gunlaker
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Re: Loads for a .45-70 BPCR
Reply #15 - Jun 7th, 2013 at 10:48am
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I'm betting that the grooves will likely be .458" (although I agree it's definitely woth the time to check).  All of my Badger .45 cal barrels have a groove diameter very close to .458".  Interestingly the bore dimensions seem to vary more than the groove.   

The one interesting thing about the Browning/Winchester BPCR .45-70 chambers is that they have no freebore. 

Chris.
  
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boats
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Re: Loads for a .45-70 BPCR
Reply #16 - Jun 7th, 2013 at 12:19pm
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In that case I would pick  459, .001 over bore size.

460 is pretty hard to load and chamber most 45/70's it's too fat for most bullet seating dies. If you slip fit load it can work.  Thing to do is mike a fired case see how big it is and what it will accept when  re-loaded

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