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Rifles, Reloading, Optics, Equipment
Reloading
Hard bolt pull?
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<blockquote data-quote="YZ-80" data-source="post: 1922688" data-attributes="member: 109229"><p>Guys, </p><p></p><p>I got my Delta 5 shooting pretty good with the 6.5 CRDM barrel. Today at the range, however I had a bit of an issue on occasion pulling the bolt back. No heavy lift. It would happen about every 3rd or 4th round. I'm running 4th cycle gunwerks brass and I'm bumping .002 to 1.504" on the Sinclair comparator. No signs of pressure on the brass, no cratered primers, etc. Headspace is good. This is a 37.2 grain charge under a 143 ELD-X and I'm .003 off the lands. I'm wondering what gives? I have a theory that maybe the neck turning striations have created more friction in the throat upon expansion but I didn't have any loads that were un-turned to test this theory. Maybe that or dirty bolt raceways or mortises? Any ideas? It didn't seem to do this as a .308. Thanks in advance for any insight.</p></blockquote><p></p>
[QUOTE="YZ-80, post: 1922688, member: 109229"] Guys, I got my Delta 5 shooting pretty good with the 6.5 CRDM barrel. Today at the range, however I had a bit of an issue on occasion pulling the bolt back. No heavy lift. It would happen about every 3rd or 4th round. I’m running 4th cycle gunwerks brass and I’m bumping .002 to 1.504” on the Sinclair comparator. No signs of pressure on the brass, no cratered primers, etc. Headspace is good. This is a 37.2 grain charge under a 143 ELD-X and I’m .003 off the lands. I’m wondering what gives? I have a theory that maybe the neck turning striations have created more friction in the throat upon expansion but I didn’t have any loads that were un-turned to test this theory. Maybe that or dirty bolt raceways or mortises? Any ideas? It didn’t seem to do this as a .308. Thanks in advance for any insight. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Hard bolt pull?
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