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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Can I improve my load procedure??
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<blockquote data-quote="milanuk" data-source="post: 35088" data-attributes="member: 376"><p>I guess I'll step in and be the exception to the rule for FiftyDriver <img src="http://images/icons/wink.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> I had a 40XB-KS in .220 Swift w/ the 1-14 twist that loved Berger 64gr MEFs above all else. Go figure. Had to be on the ragged edge of stabilization, but it worked.</p><p></p><p>In general, it's not uncommon for a gun to 'like' one bullet weight or whatever a little better than another, but 50-52-53-55gr pills... it's kind of 6 one way, half a dozen the other. Not sure that would be enough difference to really upset things. If it likes the 50-53gr stuff, feed it what it likes.</p><p></p><p>Just an FYI, if you get frustrated w/ loading up a handful of rounds for each of a bunch of different charge weights, you might try looking into what is known as 'Incremental Load Development Method' as published by Randolph Constantine, or 'Optimal Charge Weight' as promoted by Dan Newberry. Both more or less spin-offs off of the theories/practices of Creighton Audette. Basic idea is that you take a starting load, pick a reasonable seating depth, pick an increment, load one of each increment up to your max(depend on which version you subscribe to), and fire them at a target at about 300yds, keeping track of point of impact for each round. The idea isn't to see a little tiny group (yet), but to be able to see where you reach a 'node' where several shots start to cluster together vertically. The idea is that at that point, lets just say 43.5gr, 44.0gr, 44.5gr, and 45.0 gr, there isn't much velocity increas for the amount of powder increase, so the load should be fairly stable day in, day out, change in powder lots, thrown charges, enviromental changes, etc. i.e. not a finicky load. Then go back w/ some loads from in the middle of that node, and play w/ seating depth to find the sweet spot. Odds are, if you shoot a big enough range of loads, you may find more than one 'node' also. If you don't have a 300yd range, or don't trust your hold is steady enough, a chronograph can help out here, as it should show where several charge weights spit the bullet out at relatively close to the same speed (as compared to other charge weights which may show dramatic speed changes from one 0.3 or 0.5gr increment to the next).</p><p></p><p>Google for it, or look on some of the boards like here, accuratereloading.com, snipershide.com, etc.</p><p></p><p>All the above aside, it may not always work as advertised <img src="http://images/icons/frown.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> My .223 Rem worked great with it, arriving at a load that consistently grouped under 1" @ 300yds for 5 shots. My 6.5-08, put 17rds, spread across 2 full grains of H4350 behind a 142SMK, into one group about 2" high for a 150fps velocity spread. That's one of those that makes you go 'hmmm....'!</p><p></p><p>HTH,</p><p></p><p>Monte</p></blockquote><p></p>
[QUOTE="milanuk, post: 35088, member: 376"] I guess I'll step in and be the exception to the rule for FiftyDriver [img]images/icons/wink.gif[/img] I had a 40XB-KS in .220 Swift w/ the 1-14 twist that loved Berger 64gr MEFs above all else. Go figure. Had to be on the ragged edge of stabilization, but it worked. In general, it's not uncommon for a gun to 'like' one bullet weight or whatever a little better than another, but 50-52-53-55gr pills... it's kind of 6 one way, half a dozen the other. Not sure that would be enough difference to really upset things. If it likes the 50-53gr stuff, feed it what it likes. Just an FYI, if you get frustrated w/ loading up a handful of rounds for each of a bunch of different charge weights, you might try looking into what is known as 'Incremental Load Development Method' as published by Randolph Constantine, or 'Optimal Charge Weight' as promoted by Dan Newberry. Both more or less spin-offs off of the theories/practices of Creighton Audette. Basic idea is that you take a starting load, pick a reasonable seating depth, pick an increment, load one of each increment up to your max(depend on which version you subscribe to), and fire them at a target at about 300yds, keeping track of point of impact for each round. The idea isn't to see a little tiny group (yet), but to be able to see where you reach a 'node' where several shots start to cluster together vertically. The idea is that at that point, lets just say 43.5gr, 44.0gr, 44.5gr, and 45.0 gr, there isn't much velocity increas for the amount of powder increase, so the load should be fairly stable day in, day out, change in powder lots, thrown charges, enviromental changes, etc. i.e. not a finicky load. Then go back w/ some loads from in the middle of that node, and play w/ seating depth to find the sweet spot. Odds are, if you shoot a big enough range of loads, you may find more than one 'node' also. If you don't have a 300yd range, or don't trust your hold is steady enough, a chronograph can help out here, as it should show where several charge weights spit the bullet out at relatively close to the same speed (as compared to other charge weights which may show dramatic speed changes from one 0.3 or 0.5gr increment to the next). Google for it, or look on some of the boards like here, accuratereloading.com, snipershide.com, etc. All the above aside, it may not always work as advertised [img]images/icons/frown.gif[/img] My .223 Rem worked great with it, arriving at a load that consistently grouped under 1" @ 300yds for 5 shots. My 6.5-08, put 17rds, spread across 2 full grains of H4350 behind a 142SMK, into one group about 2" high for a 150fps velocity spread. That's one of those that makes you go 'hmmm....'! HTH, Monte [/QUOTE]
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Can I improve my load procedure??
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