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Rifles, Reloading, Optics, Equipment
Reloading
Neck Concentricity Help
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<blockquote data-quote="esshup" data-source="post: 221499" data-attributes="member: 11101"><p>I've come to the conclusion that it's the expander, and here's why. Please correct me if my thinking is flawed!</p><p> </p><p>I have neck sized .300 Win Mag using the same shell holder and can hold .001"-.0015" TIR, so that leads me to think that it's not the shellholder. I can neck size in the .257 die without the expander ball and get .001"-.0015" TIR. I take that same cartridge, force the expander die into it, (liberally coating the inside of the neck with Imperial) and get the familiar .006" TIR. I can partially neck size the brass, rotating it slightly every time I run the brass deeper into the die, but measuring after the final pass still nets me .004" - .006 TIR. Fired brass runs .001" TIR from both guns, both Weatherby and Norma Brass.</p><p> </p><p>I can rotate the shellholder at all "hour" positions on a clock face, neck size with the expander ball out and get .001"-.0015" TIR.</p><p> </p><p>I ordered a new shellholder, "S" type bushing neck sizing die, and .280 thru .284 bushings today. They should be delivered Thursday. I'll fireform via COW the brass that I boogered up to get it straight for the new die. I'll bet I have over 50 pieces of virgin brass to fireform tomorrow.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /> I wonder how Kirby's PK brake will like COW?<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p> </p><p>BB: The shellholder is held pretty tightly with the c-clip ring, and it won't rotate unless I turn it manually.</p><p> </p><p>Guys, your insight into this problem has helped greatly - THANKS from the bottom of my heart. I have learned some new things fighting with this problem, and I will file the info away. I'll let you know how things pan out with the new die.</p></blockquote><p></p>
[QUOTE="esshup, post: 221499, member: 11101"] I've come to the conclusion that it's the expander, and here's why. Please correct me if my thinking is flawed! I have neck sized .300 Win Mag using the same shell holder and can hold .001"-.0015" TIR, so that leads me to think that it's not the shellholder. I can neck size in the .257 die without the expander ball and get .001"-.0015" TIR. I take that same cartridge, force the expander die into it, (liberally coating the inside of the neck with Imperial) and get the familiar .006" TIR. I can partially neck size the brass, rotating it slightly every time I run the brass deeper into the die, but measuring after the final pass still nets me .004" - .006 TIR. Fired brass runs .001" TIR from both guns, both Weatherby and Norma Brass. I can rotate the shellholder at all "hour" positions on a clock face, neck size with the expander ball out and get .001"-.0015" TIR. I ordered a new shellholder, "S" type bushing neck sizing die, and .280 thru .284 bushings today. They should be delivered Thursday. I'll fireform via COW the brass that I boogered up to get it straight for the new die. I'll bet I have over 50 pieces of virgin brass to fireform tomorrow.:( I wonder how Kirby's PK brake will like COW?:D BB: The shellholder is held pretty tightly with the c-clip ring, and it won't rotate unless I turn it manually. Guys, your insight into this problem has helped greatly - THANKS from the bottom of my heart. I have learned some new things fighting with this problem, and I will file the info away. I'll let you know how things pan out with the new die. [/QUOTE]
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Neck Concentricity Help
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