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Rifles, Reloading, Optics, Equipment
Reloading
Larry Willis collet die
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<blockquote data-quote="VinceMule" data-source="post: 3079855" data-attributes="member: 122164"><p>I found that in 7 Rem Mag, the RCBS full length sizers stamped '79 or previous on the top of the die were very small in dimension, but not a small base die. You can converse with ebay sellers concerning the date stamp on the top of the die.</p><p></p><p>Two instances where I use small base sizers:</p><p></p><p> A. when I buy used brass, fired on another rifle. All my Lake City 5.56 brass used, is small base sized to avoid problems.</p><p></p><p>B. Brass fired in a custom rifle of mine where the reamer spec is "tight" compared to brass dimension, this would be considered a Match reamer by some standards. As the brass gets work hardened in the web, the brass springs back and will give the impression that it can not be sized. The solution to the work hardened brass is to size the dimension smaller to allow for the "spring back".</p><p></p><p>The top of a 7 Rem mag small base sizer die can be cut off and used to size the web on 7 STW brass, carbide part off tool used in the lathe cuts the hardened dies like butter.</p></blockquote><p></p>
[QUOTE="VinceMule, post: 3079855, member: 122164"] I found that in 7 Rem Mag, the RCBS full length sizers stamped '79 or previous on the top of the die were very small in dimension, but not a small base die. You can converse with ebay sellers concerning the date stamp on the top of the die. Two instances where I use small base sizers: A. when I buy used brass, fired on another rifle. All my Lake City 5.56 brass used, is small base sized to avoid problems. B. Brass fired in a custom rifle of mine where the reamer spec is "tight" compared to brass dimension, this would be considered a Match reamer by some standards. As the brass gets work hardened in the web, the brass springs back and will give the impression that it can not be sized. The solution to the work hardened brass is to size the dimension smaller to allow for the "spring back". The top of a 7 Rem mag small base sizer die can be cut off and used to size the web on 7 STW brass, carbide part off tool used in the lathe cuts the hardened dies like butter. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Larry Willis collet die
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