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Rifles, Reloading, Optics, Equipment
7mm STW
Peterson Brass Belted Mag Basic Unprimed Box of 50
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<blockquote data-quote="Lefty7mmstw" data-source="post: 2519396" data-attributes="member: 48043"><p>From a cylindrical case like that I'd go down to 416 or 375 first pass, then 338, then 30, then 7... you may have to anneal them like butter after a pass or two.</p><p> I've knocked down 375 h@h to 7mm stw in 2 or 3 steps with virtually zero loss before using a 338 win fl die set long, then a 300win die (or 300rum die) set for proper shoulder, then final sizing in the 7stw die (forgetting the 30 pass and going straight to 7mm can work but it's a jump and you may loose brass)... blow out with a hydro or fireform then to final shape... </p><p>If using the Peterson brass and not using a rather sloping intermediate step, you may have little fireforming at all to do, but simply trim, check neck thickness/ skim turn if needed, and shoot.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 2519396, member: 48043"] From a cylindrical case like that I'd go down to 416 or 375 first pass, then 338, then 30, then 7... you may have to anneal them like butter after a pass or two. I've knocked down 375 h@h to 7mm stw in 2 or 3 steps with virtually zero loss before using a 338 win fl die set long, then a 300win die (or 300rum die) set for proper shoulder, then final sizing in the 7stw die (forgetting the 30 pass and going straight to 7mm can work but it's a jump and you may loose brass)... blow out with a hydro or fireform then to final shape... If using the Peterson brass and not using a rather sloping intermediate step, you may have little fireforming at all to do, but simply trim, check neck thickness/ skim turn if needed, and shoot. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
Peterson Brass Belted Mag Basic Unprimed Box of 50
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