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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5x284 drop chart
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<blockquote data-quote="pills" data-source="post: 865289" data-attributes="member: 22576"><p>I worked up loads using 140g accubonds and got 2700fps at 49.0g of H4831sc. While working up I was gaining approx. 30FPS per .5 grains of powder. Using this math I would be about 2790FPS with 51.5g H4831. assuming the 140 accubond and 140 Berger have the same MV. Also the Berger manual lists 51.0g(max load) to have a mv in the high 2700's. So between these 2 I figured 2750 to be close. I don't think there is anyway it will be as slow as 2400.</p><p> </p><p>I did play with lowering the mv to 2700 in the programs and got no POI change in the solution.</p><p> </p><p>I do understand the need to prove the data and I get what you are saying about playing with the numbers to get them close to the real world results. I guess I'm just wondering why I'm so far off from these two respected ballistic programs?</p></blockquote><p></p>
[QUOTE="pills, post: 865289, member: 22576"] I worked up loads using 140g accubonds and got 2700fps at 49.0g of H4831sc. While working up I was gaining approx. 30FPS per .5 grains of powder. Using this math I would be about 2790FPS with 51.5g H4831. assuming the 140 accubond and 140 Berger have the same MV. Also the Berger manual lists 51.0g(max load) to have a mv in the high 2700's. So between these 2 I figured 2750 to be close. I don't think there is anyway it will be as slow as 2400. I did play with lowering the mv to 2700 in the programs and got no POI change in the solution. I do understand the need to prove the data and I get what you are saying about playing with the numbers to get them close to the real world results. I guess I'm just wondering why I'm so far off from these two respected ballistic programs? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5x284 drop chart
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