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The Range
Ammo & Reloading
Load development for the individual firearm, 6.5 Creedmoor
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<blockquote data-quote="diggler1833" data-source="post: 3736939" data-attributes="member: 48072"><p>1) I wouldn't worry about annealing until your second firing. From there you can anneal every time or every other time. Annealing will not prevent primer pockets from getting loose or case head separation...but it will prevent the necks from splitting. My experience with hotter 5.56 in Lake City brass has that happening on the third loading if not annealed.</p><p></p><p>2) Measuring your case length from base to shoulder *on a fired cartridge from that particular rifle* will determine how to set up your full length dies. I'm typically a .002 - .003 bump guy, but others may prefer a bump of only .001. Unless you're a benchrest shooter, it matters less. CBTO is good for determining the jump your particular bullet likes. CBTO is more consistent than COL/COAL (same thing, just depends on who is typing it) because you will almost always encounter a few thousandths difference in bullet overall length. Where I am most concerned with COL is in magazine clearance.</p><p></p><p>3) I use a Hornady OAL gauge to measure a particular bullet until it hits the lands. I personally shoot groups at .010, .040, .070, and .100" jump to see if there is a preference.</p><p></p><p>4) Full length or bushing.</p></blockquote><p></p>
[QUOTE="diggler1833, post: 3736939, member: 48072"] 1) I wouldn't worry about annealing until your second firing. From there you can anneal every time or every other time. Annealing will not prevent primer pockets from getting loose or case head separation...but it will prevent the necks from splitting. My experience with hotter 5.56 in Lake City brass has that happening on the third loading if not annealed. 2) Measuring your case length from base to shoulder *on a fired cartridge from that particular rifle* will determine how to set up your full length dies. I'm typically a .002 - .003 bump guy, but others may prefer a bump of only .001. Unless you're a benchrest shooter, it matters less. CBTO is good for determining the jump your particular bullet likes. CBTO is more consistent than COL/COAL (same thing, just depends on who is typing it) because you will almost always encounter a few thousandths difference in bullet overall length. Where I am most concerned with COL is in magazine clearance. 3) I use a Hornady OAL gauge to measure a particular bullet until it hits the lands. I personally shoot groups at .010, .040, .070, and .100" jump to see if there is a preference. 4) Full length or bushing. [/QUOTE]
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Load development for the individual firearm, 6.5 Creedmoor
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