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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Super Fast Twist Barrels for Hammer Bullets
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<blockquote data-quote="RockyMtnMT" data-source="post: 2888771" data-attributes="member: 7999"><p>I don't know that we have it down. Like a lot of this stuff it becomes a "feeling" you develop over time with success and failure. We learn more form failure than anything. I can say that the stability calculators are flawed, IMO. Particularly the longer for caliber a bullet gets. The calculators are only calculating ballistic stability. This is different than terminal stability. A marginally stable bullet can fly quite accurately but it will likely have a higher incidence of failure on game. What we have figured out is that calculating ballistic stability at sea level for a 1.5 sg is a good consistent calculation for minimum twist for good terminal performance. We consider it a "minimum" and more twist is a good thing. Guys that are hunting at sea level in cold temperatures should choose a bullet with higher stability. Again, the longer for caliber a bullet gets the more critical this gets. Short for caliber bullets don't seem to care. They just work.</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 2888771, member: 7999"] I don't know that we have it down. Like a lot of this stuff it becomes a "feeling" you develop over time with success and failure. We learn more form failure than anything. I can say that the stability calculators are flawed, IMO. Particularly the longer for caliber a bullet gets. The calculators are only calculating ballistic stability. This is different than terminal stability. A marginally stable bullet can fly quite accurately but it will likely have a higher incidence of failure on game. What we have figured out is that calculating ballistic stability at sea level for a 1.5 sg is a good consistent calculation for minimum twist for good terminal performance. We consider it a "minimum" and more twist is a good thing. Guys that are hunting at sea level in cold temperatures should choose a bullet with higher stability. Again, the longer for caliber a bullet gets the more critical this gets. Short for caliber bullets don't seem to care. They just work. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Super Fast Twist Barrels for Hammer Bullets
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