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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5 Berger 144 & 153.5 Hybrids
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<blockquote data-quote="lancetkenyon" data-source="post: 2225196" data-attributes="member: 68875"><p>-.8% of listed BC is what I have used on a few bullets that I open up.</p><p>6mm 110 SMK</p><p>.257" 131 BJ</p><p>6.5mm 144 LR Hyb</p><p>6.5mm 150 SMK</p><p>7mm 183 SMK</p><p>.308" 210 SMK</p><p></p><p>I have tested these reduced numbers on all but the 210 SMK out at distance from 741 to 1500+, and they have been spot on.</p><p></p><p>I am shooting the 144 LR Hyb in my 20" 1:7.5" 6.5SS @ a mild 2990fps. I can get them to 3088fps, but lowest SD and best accuracy is @ 2990. Plus, brass will last longer at the lower pressures too. I have shot them out to 1400 quite a bit on steel. That combo, at 6500' & 85° (my pronghorn hunting area) makes it a 1210 yard round to maintain 1800fps & 1000ft/lbs minimum. Going up to my late season deer area @ 7000' & 25°, it drops to an 1150 yard round. Still pretty impressive for a 20" barrel and a 144.</p></blockquote><p></p>
[QUOTE="lancetkenyon, post: 2225196, member: 68875"] -.8% of listed BC is what I have used on a few bullets that I open up. 6mm 110 SMK .257" 131 BJ 6.5mm 144 LR Hyb 6.5mm 150 SMK 7mm 183 SMK .308" 210 SMK I have tested these reduced numbers on all but the 210 SMK out at distance from 741 to 1500+, and they have been spot on. I am shooting the 144 LR Hyb in my 20" 1:7.5" 6.5SS @ a mild 2990fps. I can get them to 3088fps, but lowest SD and best accuracy is @ 2990. Plus, brass will last longer at the lower pressures too. I have shot them out to 1400 quite a bit on steel. That combo, at 6500' & 85° (my pronghorn hunting area) makes it a 1210 yard round to maintain 1800fps & 1000ft/lbs minimum. Going up to my late season deer area @ 7000' & 25°, it drops to an 1150 yard round. Still pretty impressive for a 20" barrel and a 144. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5 Berger 144 & 153.5 Hybrids
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