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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet weight vs velocity
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<blockquote data-quote="MontanaRifleman" data-source="post: 871563" data-attributes="member: 11717"><p>I have run hundreds of ballistic comparisons and the heavy high BC bullet always does best in the wind. That said, the difference is usually small for low drag (VLD) bullets. I have used my own data and data that I have dug up by searching the internet. In my own experiences I have found 10 gr of weight = 100 fps of velocity in the .308 cal and 5 gr of weight = 100 fps in the 25 cal.</p><p></p><p>So if you are shooting the 215 hybrid in the 300 WM @ 3000 fps then you can expect to push the 185's at about 3300 fps</p><p></p><p>When running those velocities and the corresponding BC's you get this @ 1000 yds and 10 mph wind...</p><p></p><p>215's, 52" drift</p><p>185's, 58.7" drift</p><p></p><p></p><p>This is always the result when comparing apples to apples. The heavier, slower bullet with same basic form factor always does better.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 871563, member: 11717"] I have run hundreds of ballistic comparisons and the heavy high BC bullet always does best in the wind. That said, the difference is usually small for low drag (VLD) bullets. I have used my own data and data that I have dug up by searching the internet. In my own experiences I have found 10 gr of weight = 100 fps of velocity in the .308 cal and 5 gr of weight = 100 fps in the 25 cal. So if you are shooting the 215 hybrid in the 300 WM @ 3000 fps then you can expect to push the 185's at about 3300 fps When running those velocities and the corresponding BC's you get this @ 1000 yds and 10 mph wind... 215's, 52" drift 185's, 58.7" drift This is always the result when comparing apples to apples. The heavier, slower bullet with same basic form factor always does better. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Bullet weight vs velocity
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