.375 H&H Brass formed to .340 WBY?

Delta Elite 10MM

February 26, 2015 20:24

I bought 100 rounds of .340 Wby ammo for an estate auction with intention of just turning them into brass. When I opened up the boxes I saw that they were mixed head stamps of .340 wby, .300 wby and .375 H&H? From my limited research I found that the .340 wby was based off the .300 wby and the .300 wby was based off the .300 H&H, and that was in turn based off the .375 H&H. Has anybody ever heard of using .375 H&H brass and re-formed to fit the .340 WBY?

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  charliemeyer007

  February 26, 2015 21:47

  http://en.wikipedia.org/wiki/.340_Weatherby_Magnum Case l. 2.82"
  
  http://en.wikipedia.org/wiki/.300_Weatherby_Magnum CL 2.825
  
  http://en.wikipedia.org/wiki/.375_Holland_&_Holland_Magnum CL 2.85
  
  It will work.
  I would generally consider mystery brass suitable for reduced loads with cast bullets for trigger time. Full tilt hunting loads I'd be using brass that I knew the history of. Although not all common I'm sure you can buy some new brass.

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  nononsense

  February 27, 2015 02:33

  Delta Elite 10MM,
  
  It was and probably still is a favorite work around when you consider the cost of Norma or Weatherby head stamped brass. We used to get H&H brass for less than $0.50/piece and loaded .300 H&H for a dollar a piece. Fireforming in an appropriate chamber was simplified by the belt as the headspace feature. The .375 H&H could either be necked down or necked up for similar wildcats also.
  
  While I suggest caution when using ammunition from an unknown source, the process of making brass from H&H brass is common and not dangerous when all of the rules of common sense and safety are applied to the reloading.
  
  Best.

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