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Rifles, Reloading, Optics, Equipment
Reloading
What is acceptable variance in length?
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<blockquote data-quote="rooster721" data-source="post: 869234" data-attributes="member: 40654"><p>Regarding overall length.. I have a little to mention</p><p> </p><p>I just finished up a new load (for a new barrel) and noted some differences in COAL and accuracy. But it had to do with seating depth, more than anything*</p><p> </p><p>Some of my brass (work hardening reasons) seats hard, some seats light, and the majority is somewhere's in-between... basically, for those that are inbetween and relatively consistent; I see 2thou max (difference) in seating depths. For those seating lightly (easier than the others) they seat deeper; even up to 4thou deeper than my 'good ones'! And finally, those tough to seat suckers, they seat up to 3 thou SHALLOWER* ...all that said, those (most extreme) differences in SEATING DEPTHs, (on my paper anyhow) showed 1/4" groups going to an inch (+) !!!</p><p> </p><p>I find, if you can keep seatings/& OAL (in regards to that and seating tenisons) inside of 2-3thou of whatever your most accurate seating depth is, you'll keep consistent loads. Once you're out of that 2-3thou window, (in my case anyways) you can kiss your accuracy goodbye..</p><p> </p><p><em>To fix all that, I'm going to be annealing from here on, in an attempt to eliminate <u>or at least decrease those variances</u>* </em>See what happens. But should cure it.</p></blockquote><p></p>
[QUOTE="rooster721, post: 869234, member: 40654"] Regarding overall length.. I have a little to mention I just finished up a new load (for a new barrel) and noted some differences in COAL and accuracy. But it had to do with seating depth, more than anything* Some of my brass (work hardening reasons) seats hard, some seats light, and the majority is somewhere's in-between... basically, for those that are inbetween and relatively consistent; I see 2thou max (difference) in seating depths. For those seating lightly (easier than the others) they seat deeper; even up to 4thou deeper than my 'good ones'! And finally, those tough to seat suckers, they seat up to 3 thou SHALLOWER* ...all that said, those (most extreme) differences in SEATING DEPTHs, (on my paper anyhow) showed 1/4" groups going to an inch (+) !!! I find, if you can keep seatings/& OAL (in regards to that and seating tenisons) inside of 2-3thou of whatever your most accurate seating depth is, you'll keep consistent loads. Once you're out of that 2-3thou window, (in my case anyways) you can kiss your accuracy goodbye.. [I]To fix all that, I'm going to be annealing from here on, in an attempt to eliminate [U]or at least decrease those variances[/U]* [/I]See what happens. But should cure it. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
What is acceptable variance in length?
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