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Rifles, Reloading, Optics, Equipment
Reloading
Cooper 280AI Loads Advice
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<blockquote data-quote="tyewabell" data-source="post: 1104173" data-attributes="member: 86573"><p>Thanks for all the info. So going by Nosler's load data, I'm shooting for a COAL of 3.33 with a max powder charge of 60 grains of IMR 4831 for a 140 grain or 59 grains of H4831SC with the same COAL for a 160 grain.</p><p></p><p>Cooper's stated load for the 280AI's they build is apparently the same for each gun. COAL of 3.32 with 56 grains of RL19 and a 130gr SGK. Interesting to see the .01 difference in COAL between Nosler and Cooper.</p><p></p><p>Is there much of a difference between the various 4831 powders in terms of temp sensitivity? </p><p></p><p>Also, I don't plan to shoot over 600 yards with this gun just yet, longest range I have access to is 500 yards as it is, so the heavier bullets aren't needed at this time with Mule Deer and Whitetail as the targets for the time being. Fall of 2016 when I'm chasing Elk, I'll develop a load with either 160's or 168's.</p></blockquote><p></p>
[QUOTE="tyewabell, post: 1104173, member: 86573"] Thanks for all the info. So going by Nosler's load data, I'm shooting for a COAL of 3.33 with a max powder charge of 60 grains of IMR 4831 for a 140 grain or 59 grains of H4831SC with the same COAL for a 160 grain. Cooper's stated load for the 280AI's they build is apparently the same for each gun. COAL of 3.32 with 56 grains of RL19 and a 130gr SGK. Interesting to see the .01 difference in COAL between Nosler and Cooper. Is there much of a difference between the various 4831 powders in terms of temp sensitivity? Also, I don't plan to shoot over 600 yards with this gun just yet, longest range I have access to is 500 yards as it is, so the heavier bullets aren't needed at this time with Mule Deer and Whitetail as the targets for the time being. Fall of 2016 when I'm chasing Elk, I'll develop a load with either 160's or 168's. [/QUOTE]
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Cooper 280AI Loads Advice
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