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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: 2027259" data-attributes="member: 11960"><p>I personally don't worry about annealing after going from 375 down to 338. I would neck them down then fireform the brass however you see fit. I would anneal after the first firing though. If you were necking down beyond 338 or doing it in multiple passes it might be worth annealing after every step I suppose. I've necked down literally thousands of 375 cases (a mix of H&H, RUM, and Ruger) to various neck diameters and the only time I anneal them before fireforming is when I have to size the neck down in multiple steps or going beyond 338.</p><p></p><p>Instead of inside neck reaming, why don't you turn the outside of the case necks? Just run an expanding mandrel like the K&M Expand-Iron through the necks of your formed cases and it will push the donut to the outside of the case neck where it can be turned down to the appropriate diameter. I find that to be much easier than inside neck reaming.</p></blockquote><p></p>
[QUOTE="yorke-1, post: 2027259, member: 11960"] I personally don't worry about annealing after going from 375 down to 338. I would neck them down then fireform the brass however you see fit. I would anneal after the first firing though. If you were necking down beyond 338 or doing it in multiple passes it might be worth annealing after every step I suppose. I've necked down literally thousands of 375 cases (a mix of H&H, RUM, and Ruger) to various neck diameters and the only time I anneal them before fireforming is when I have to size the neck down in multiple steps or going beyond 338. Instead of inside neck reaming, why don't you turn the outside of the case necks? Just run an expanding mandrel like the K&M Expand-Iron through the necks of your formed cases and it will push the donut to the outside of the case neck where it can be turned down to the appropriate diameter. I find that to be much easier than inside neck reaming. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.375 H&H Brass to .340 Weatherby Brass Conversion Question
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