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Rifles, Reloading, Optics, Equipment
Reloading
Which Dies Are Best?
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<blockquote data-quote="BigJakeJ1s" data-source="post: 458618" data-attributes="member: 12889"><p>Perhaps, but can you provide a reference to a SAAMI standard for a reloading die? </p><p></p><p>Nowhere on their website do they even list, let alone provide, any standards, drawings, documents or activities except for firearms, ammunition, ammunition components, and legal/technical assistance to political/governmental organizations regarding same. Their list of member companies does not include one manufacturer of reloading equipment except those that also make ammunition components (e.g. Hornady and ATK). If they did govern reloading die standards, don't you think they'd at least mention it, and they'd have memberships from at least one of Redding, Lee, Lyman, Wilson, et al?</p><p></p><p> </p><p></p><p>The two reamers used to cut firearm chambers (as well as most tapered or non-cylindrical holes) are referred to as "roughing" and "finishing" reamers, and differ by far more than mere size of the finished hole. </p><p></p><p>While the roughing reamer would cut a smaller chamber, the dimensions would not be precise nor the surface quality acceptable without following up with a finish reamer. Roughing reamers are designed with fewer, larger flutes with serrations to quickly remove the majority of the material from the chamber (after starting from a cylindrical hole), removing chips easily and quickly. Surface finish and accuracy of the roughed chamber is purposely sacrificed for these other properties. </p><p></p><p>The finishing reamer is designed to remove very little material to achieve the finished dimensions only when starting from a rough-reamed chamber, and therefore need not be designed to clear chips well, but will give an accurate, smooth, finished chamber. Compared to roughing reamers, finish reamers have more, smaller flutes with no serrations. </p><p></p><p>In short, only the finishing reamer would be capable of providing the accuracy and finish (prior to honing/polishing) required in a reloading die, and if it is the same one used for the rifle chamber, a reloading die made with it would be almost exactly the same size and shape as the rifle chamber.</p><p></p><p>Andy</p></blockquote><p></p>
[QUOTE="BigJakeJ1s, post: 458618, member: 12889"] Perhaps, but can you provide a reference to a SAAMI standard for a reloading die? Nowhere on their website do they even list, let alone provide, any standards, drawings, documents or activities except for firearms, ammunition, ammunition components, and legal/technical assistance to political/governmental organizations regarding same. Their list of member companies does not include one manufacturer of reloading equipment except those that also make ammunition components (e.g. Hornady and ATK). If they did govern reloading die standards, don't you think they'd at least mention it, and they'd have memberships from at least one of Redding, Lee, Lyman, Wilson, et al? The two reamers used to cut firearm chambers (as well as most tapered or non-cylindrical holes) are referred to as "roughing" and "finishing" reamers, and differ by far more than mere size of the finished hole. While the roughing reamer would cut a smaller chamber, the dimensions would not be precise nor the surface quality acceptable without following up with a finish reamer. Roughing reamers are designed with fewer, larger flutes with serrations to quickly remove the majority of the material from the chamber (after starting from a cylindrical hole), removing chips easily and quickly. Surface finish and accuracy of the roughed chamber is purposely sacrificed for these other properties. The finishing reamer is designed to remove very little material to achieve the finished dimensions only when starting from a rough-reamed chamber, and therefore need not be designed to clear chips well, but will give an accurate, smooth, finished chamber. Compared to roughing reamers, finish reamers have more, smaller flutes with no serrations. In short, only the finishing reamer would be capable of providing the accuracy and finish (prior to honing/polishing) required in a reloading die, and if it is the same one used for the rifle chamber, a reloading die made with it would be almost exactly the same size and shape as the rifle chamber. Andy [/QUOTE]
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Which Dies Are Best?
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