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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger 6.5 135gr Classic vs 140 gr Elite vs 143 gr ELD-X
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<blockquote data-quote="Trnelson" data-source="post: 1315604" data-attributes="member: 42308"><p>For your intended purpose and the velocity window you can utilize any of the three you list will be more than sufficient. Of the three you list, I have spent quite a bit of barrel time in several 6.5 rifles, including a couple of Creedmoors, with the 143 ELDX. I can tell you that they will perform as advertised down to ~1,750fps, lower if you are targeting bone. You will want to take the time to sort them by weight and then again by bullet base to ogive to be able coax sub-half MOA accuracy out of them. </p><p>H4350 has been what delivered best accuracy and lowest SD in two of the Creedmoor chambered rifles I have messed around with. We worked up and ended up at 2,765 fps with a SD of 7. The other powder we have worked up with is Norma URP at 2,771 SD of 10. I would also consider R-16 as it falls right in that same area of burn rate and is temperature stabil. </p><p>If I were you I would try all three of those bullets and maybe the 140 Berger hybrid and determine what your rifle shoots most accurately and with the lowest SD. In the end the rifle will determine what it will shoot best. I haven't had a rifle yet that have much deference to what I wanted it to shoot best. Have fun that Cooper should be a nice stick.</p></blockquote><p></p>
[QUOTE="Trnelson, post: 1315604, member: 42308"] For your intended purpose and the velocity window you can utilize any of the three you list will be more than sufficient. Of the three you list, I have spent quite a bit of barrel time in several 6.5 rifles, including a couple of Creedmoors, with the 143 ELDX. I can tell you that they will perform as advertised down to ~1,750fps, lower if you are targeting bone. You will want to take the time to sort them by weight and then again by bullet base to ogive to be able coax sub-half MOA accuracy out of them. H4350 has been what delivered best accuracy and lowest SD in two of the Creedmoor chambered rifles I have messed around with. We worked up and ended up at 2,765 fps with a SD of 7. The other powder we have worked up with is Norma URP at 2,771 SD of 10. I would also consider R-16 as it falls right in that same area of burn rate and is temperature stabil. If I were you I would try all three of those bullets and maybe the 140 Berger hybrid and determine what your rifle shoots most accurately and with the lowest SD. In the end the rifle will determine what it will shoot best. I haven't had a rifle yet that have much deference to what I wanted it to shoot best. Have fun that Cooper should be a nice stick. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger 6.5 135gr Classic vs 140 gr Elite vs 143 gr ELD-X
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