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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Work hardened brass and POI...
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<blockquote data-quote="jmden" data-source="post: 169094" data-attributes="member: 1742"><p>CS, 300RUM shooting 240SMK's seating to the lands. Fourth or fifth firing when I started to notice this 'issue'. FL die which crushed 'em down and works 'em way too much. Adjust using the Redding Competition Shellholder kit that has 5 shellholders (+.002 through +.010 at .002 intervals). A +.010 shellholder does the minimum amount of sizing (in my rifle) while still allowing the case to chamber. My understanding of these mechanics are that using the +.010 shellholder (check out how Redding Comp. Shellholders work...?) increases my casehead to mid-shoulder dimension +.010 over what the standard shellholder and FL die would do. The Redding Comp. Shellholders are used to control 'bump' in my understanding. The cases would not bump before annealing (after several firings), now they do.</p></blockquote><p></p>
[QUOTE="jmden, post: 169094, member: 1742"] CS, 300RUM shooting 240SMK's seating to the lands. Fourth or fifth firing when I started to notice this 'issue'. FL die which crushed 'em down and works 'em way too much. Adjust using the Redding Competition Shellholder kit that has 5 shellholders (+.002 through +.010 at .002 intervals). A +.010 shellholder does the minimum amount of sizing (in my rifle) while still allowing the case to chamber. My understanding of these mechanics are that using the +.010 shellholder (check out how Redding Comp. Shellholders work...?) increases my casehead to mid-shoulder dimension +.010 over what the standard shellholder and FL die would do. The Redding Comp. Shellholders are used to control 'bump' in my understanding. The cases would not bump before annealing (after several firings), now they do. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Work hardened brass and POI...
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