This says that Nosler Accubond Long Range Bullets [ALBR]: http://www.americanrifleman.org/articles/2014/8/21/nosler-accubond-long-range-bullets/Nosler states that ABLR bullets readily expand at impact velocities as low as 1300 f.p.s. That is 500-f.p.s. slower than the company’s other big-game bullets and 300-f.p.s. slower than even Ballistic Tip Varmint bullets. That low-velocity expansion is achieved with a thinner jacket at the nose and a deeper cavity below the polymer tip compared to regular AccuBond bullets. On the fast end, Nosler states that ABLR bullets expand yet remain mostly whole at extreme velocities. Expansion is controlled by a jacket that thickens toward the rear and is halted by a solid base that encompasses the entire boat tail. The jacket comprises approximately 45 percent of the bullet’s weight and is bonded to the lead core to ensure bullet integrity.
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