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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cooper Rifles and Max Loads
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<blockquote data-quote="ksshooter" data-source="post: 2101999" data-attributes="member: 75780"><p>I have talked to Glenn at cooper a few years back. He told me to start at the bottom and work up. He said that in most cases you will find max is usually around a grain under what your book will say due to having a tight chamber. I experienced this when I obtained reloading data from Berger for a cooper Excalibur in 6.5x284. I found that I was actually 2 grains under what they recommended and still experiencing minor pressure signs. I chronographed the load. 100fps faster than what Berger said max load velocity should be. I backed it off to the next node and I believe I'm Around 3-3.5 gr under max and still maintaining Berger's published max load velocity for this caliber. I have owned several coolers over the years. All shot lights out. Most were 1-2gr under published max load data. Hope this helped. Good luck with your loads.</p></blockquote><p></p>
[QUOTE="ksshooter, post: 2101999, member: 75780"] I have talked to Glenn at cooper a few years back. He told me to start at the bottom and work up. He said that in most cases you will find max is usually around a grain under what your book will say due to having a tight chamber. I experienced this when I obtained reloading data from Berger for a cooper Excalibur in 6.5x284. I found that I was actually 2 grains under what they recommended and still experiencing minor pressure signs. I chronographed the load. 100fps faster than what Berger said max load velocity should be. I backed it off to the next node and I believe I’m Around 3-3.5 gr under max and still maintaining Berger’s published max load velocity for this caliber. I have owned several coolers over the years. All shot lights out. Most were 1-2gr under published max load data. Hope this helped. Good luck with your loads. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Cooper Rifles and Max Loads
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