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Rifles, Reloading, Optics, Equipment
Reloading
7mm ultra mag reloading issue
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<blockquote data-quote="AZShooter" data-source="post: 1278779" data-attributes="member: 5219"><p>I have made two "small base" dies by cutting off both ends of a FL die. The end result reduces the diameter of the area near the web. I did this for the 300 RUM and the 338 RCM. </p><p></p><p>My experiences with those two cases, custom chamber reamers combined with the thicker brass of these cases, caused hard extraction to after two firings. I could see a rubbed zone just in front of the web. The "web" sizer die solved the issue.</p><p></p><p>I used a carbide tool bit in my lathe to cut through the case hardened RCBS die. The carbide tool bit ends up useless afterwards but we have a surplus store that sells them for a buck so no big deal. The orange sparks are pretty crazy till you get to the softer metal underneath. Some fine machining and sanding yields a personalized small base die. Perhaps you can convince your gunsmith to make you one.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 1278779, member: 5219"] I have made two "small base" dies by cutting off both ends of a FL die. The end result reduces the diameter of the area near the web. I did this for the 300 RUM and the 338 RCM. My experiences with those two cases, custom chamber reamers combined with the thicker brass of these cases, caused hard extraction to after two firings. I could see a rubbed zone just in front of the web. The "web" sizer die solved the issue. I used a carbide tool bit in my lathe to cut through the case hardened RCBS die. The carbide tool bit ends up useless afterwards but we have a surplus store that sells them for a buck so no big deal. The orange sparks are pretty crazy till you get to the softer metal underneath. Some fine machining and sanding yields a personalized small base die. Perhaps you can convince your gunsmith to make you one. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm ultra mag reloading issue
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