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Rifles, Reloading, Optics, Equipment
Reloading
Brass undersized by .020” :(
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<blockquote data-quote="243winxb" data-source="post: 1892113" data-attributes="member: 97793"><p>My first bushing dies instructions said to start with a .010" gap between the shell holder & bottom of the fl die. Took forever for a sized case to chamber. I called Redding and ask what i get if both make contact. They said standard SAAMI sizing.</p><p>My 7mm TCU die would set the shoulder back to much if both made contact. Was not a SAAMI standard.</p><p></p><p>"A <strong>tolerance</strong> is the acceptable difference between the maximum and minimum size of a <strong>mechanical</strong> part as a basis for determining the accuracy of its fit with another part."</p><p></p><p>Most times the dies & rifle chambers are both near the middle of the tolerances. Not maximum, not minimum.</p><p></p><p>But put together a maximum chamber & minimum die, this leaves a lot of head clearance for the cartridge sitting in the chamber. Not a good thing.</p><p></p><p>Standard dies give a safe usable sizing 99 % of the time when the shell holder contacts the bottom of the die. Imo.</p></blockquote><p></p>
[QUOTE="243winxb, post: 1892113, member: 97793"] My first bushing dies instructions said to start with a .010" gap between the shell holder & bottom of the fl die. Took forever for a sized case to chamber. I called Redding and ask what i get if both make contact. They said standard SAAMI sizing. My 7mm TCU die would set the shoulder back to much if both made contact. Was not a SAAMI standard. "A [B]tolerance[/B] is the acceptable difference between the maximum and minimum size of a [B]mechanical[/B] part as a basis for determining the accuracy of its fit with another part." Most times the dies & rifle chambers are both near the middle of the tolerances. Not maximum, not minimum. But put together a maximum chamber & minimum die, this leaves a lot of head clearance for the cartridge sitting in the chamber. Not a good thing. Standard dies give a safe usable sizing 99 % of the time when the shell holder contacts the bottom of the die. Imo. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Brass undersized by .020” :(
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