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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Berger Bullets 4 Hunting
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<blockquote data-quote="cohunt" data-source="post: 1470844" data-attributes="member: 94491"><p>Id be guessing for sure on speed-- I have speeds for 162 eldx in my 7 mag, but nothing in the 180 class --- If I use generic nosler data that would put me around 2850-2950 for a 180 possibly (if thats a good accuracy node)</p><p></p><p>checking the jbm length of the 180 hybrid and using the berger stab calculator it shows its good in a 9.25 twist -- I get close if I go lower in altitude (1.66, but I get up to 1.8 if I increase speed and altitude) --- I just figured that berger suggested twist rate would be close to the 1.5 stability factor, guess their "suggested" twist rates would put you close to a 2.0 factor---OK, might try some--If I can get 2900fps, that would give me 200 ft lbs more energy at 1000 yards, almost 100 fps more velocity, the heavier bullet does drop 2 moa more at 1000 but has almost 1 moa less wind drift than my 162 load</p><p></p><p>thanks for the help and info guys, I think I'm gonna give the 168's and 180's a whirl</p><p>guess next time I need to punch numbers first, I just assumed that bergers "suggested twist" would have been closer than what I thiought it was</p></blockquote><p></p>
[QUOTE="cohunt, post: 1470844, member: 94491"] Id be guessing for sure on speed-- I have speeds for 162 eldx in my 7 mag, but nothing in the 180 class --- If I use generic nosler data that would put me around 2850-2950 for a 180 possibly (if thats a good accuracy node) checking the jbm length of the 180 hybrid and using the berger stab calculator it shows its good in a 9.25 twist -- I get close if I go lower in altitude (1.66, but I get up to 1.8 if I increase speed and altitude) --- I just figured that berger suggested twist rate would be close to the 1.5 stability factor, guess their "suggested" twist rates would put you close to a 2.0 factor---OK, might try some--If I can get 2900fps, that would give me 200 ft lbs more energy at 1000 yards, almost 100 fps more velocity, the heavier bullet does drop 2 moa more at 1000 but has almost 1 moa less wind drift than my 162 load thanks for the help and info guys, I think I'm gonna give the 168's and 180's a whirl guess next time I need to punch numbers first, I just assumed that bergers "suggested twist" would have been closer than what I thiought it was [/QUOTE]
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Berger Bullets 4 Hunting
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