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Rifles, Reloading, Optics, Equipment
Reloading
.375 H&H Brass to .340 Weatherby Brass Conversion Question
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<blockquote data-quote="yorke-1" data-source="post: 2027156" data-attributes="member: 11960"><p>Longestranger, I think you're overthinking the conversion. It's really as simple as running a 375 H&H case into a 340 Weatherby die until the bolt will close on a piece of brass in your chamber, trimming to length and either COW forming (like MagnumManiac described) or firing a moderate load in the converted case. </p><p></p><p>I also wouldn't be so quick to dismiss what J E Custom is saying. The internal web design of 375 H&H brass is likely different than the specs on 340 Weatherby brass. It may not make a big difference, but the difference is still there. As an experiment, once you've successfully formed the 340 brass from 375 H&H brass, measure the internal case capacities of Weatherby headstamped 340 brass and your converted 375 H&H brass. I bet you'll end up with different capacities and those are caused by differences in the internal case dimensions. I believe that's all J E was trying to explain.</p></blockquote><p></p>
[QUOTE="yorke-1, post: 2027156, member: 11960"] Longestranger, I think you're overthinking the conversion. It's really as simple as running a 375 H&H case into a 340 Weatherby die until the bolt will close on a piece of brass in your chamber, trimming to length and either COW forming (like MagnumManiac described) or firing a moderate load in the converted case. I also wouldn't be so quick to dismiss what J E Custom is saying. The internal web design of 375 H&H brass is likely different than the specs on 340 Weatherby brass. It may not make a big difference, but the difference is still there. As an experiment, once you've successfully formed the 340 brass from 375 H&H brass, measure the internal case capacities of Weatherby headstamped 340 brass and your converted 375 H&H brass. I bet you'll end up with different capacities and those are caused by differences in the internal case dimensions. I believe that's all J E was trying to explain. [/QUOTE]
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.375 H&H Brass to .340 Weatherby Brass Conversion Question
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