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Rifles, Reloading, Optics, Equipment
Reloading
Temperature sensitivity of IMR4451 ...
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<blockquote data-quote="codyadams" data-source="post: 1865001" data-attributes="member: 87243"><p>My .260 AI has a 29" barrel, I am currently shooting the 156 Berger HBN coated at 2940 fps using 49.0 grains RL-26 and well under max, pressure signs started around 3000 fps. I had 12 fireings on my Lapua brass with similar loads and now have 4 loading on my peterson SRP brass with no signs of wear. But I have heard RL-26 gets finicky and jumps pressure around 80-85 degrees, however in Wyoming I rarely shoot at that temperature. Below that I have tested and seen very little change from 17° to 70°, it was .15 fps per degree. </p><p></p><p>But, I have heard VV-N565 may be a good stable option, similar burn rate to RL-26 and still high energy, not sure on density if enough vv-n565 would fit, I have to use a drop tube and am right at 100% capacity with 49 grains RL-26, OAL of 2.950" with the 156.</p></blockquote><p></p>
[QUOTE="codyadams, post: 1865001, member: 87243"] My .260 AI has a 29" barrel, I am currently shooting the 156 Berger HBN coated at 2940 fps using 49.0 grains RL-26 and well under max, pressure signs started around 3000 fps. I had 12 fireings on my Lapua brass with similar loads and now have 4 loading on my peterson SRP brass with no signs of wear. But I have heard RL-26 gets finicky and jumps pressure around 80-85 degrees, however in Wyoming I rarely shoot at that temperature. Below that I have tested and seen very little change from 17° to 70°, it was .15 fps per degree. But, I have heard VV-N565 may be a good stable option, similar burn rate to RL-26 and still high energy, not sure on density if enough vv-n565 would fit, I have to use a drop tube and am right at 100% capacity with 49 grains RL-26, OAL of 2.950" with the 156. [/QUOTE]
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Reloading
Temperature sensitivity of IMR4451 ...
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