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Rifles, Reloading, Optics, Equipment
Reloading
Neck Sizing Vs. Full Length Sizing and Neck Tension
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<blockquote data-quote="SSG Graybush" data-source="post: 2871521" data-attributes="member: 115190"><p>I get 15+ reloads from my belted mags, never had a case fail. a 300 wm and 7RM. Sounds like your 300 wm either has too much headspace or you bump the shoulders back too far. You should set up your FL sizer die to bump it back 2 to 4 thou back from fired.</p><p> Once the headspace is set off the belt treat belted mags like non belted cases. Headspace and bullet comparators are nesseasary tools for reloading. Most beginners read rcbs instructions and resize till slight over cam and thats wrong. Causing belted mag haters. </p><p>And measure a loaded round OD on neck, subtract 2 thou and thats where you should start for neck tension.</p></blockquote><p></p>
[QUOTE="SSG Graybush, post: 2871521, member: 115190"] I get 15+ reloads from my belted mags, never had a case fail. a 300 wm and 7RM. Sounds like your 300 wm either has too much headspace or you bump the shoulders back too far. You should set up your FL sizer die to bump it back 2 to 4 thou back from fired. Once the headspace is set off the belt treat belted mags like non belted cases. Headspace and bullet comparators are nesseasary tools for reloading. Most beginners read rcbs instructions and resize till slight over cam and thats wrong. Causing belted mag haters. And measure a loaded round OD on neck, subtract 2 thou and thats where you should start for neck tension. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck Sizing Vs. Full Length Sizing and Neck Tension
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