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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Lapua mag improved or 338 Lapua mag AI?
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<blockquote data-quote="jmden" data-source="post: 462570" data-attributes="member: 1742"><p>My understanding of AI (Ackley Improved) is that it specifically designates a 40 degree shoulder. If I recall correctly, that was PO Ackley's 'trademark' shoulder angle. Many of the Lap Imps (and Imps in general today) are down around 35 degree shoulder angles.</p><p> </p><p>My 338 AX (Kirby Allens' Lap Imp) is doing 2980fps with 300 SMK over 102.0g Retumbo out of a 30" barrel, but I think I'm going to tone that down by at least .5 g here soon.</p></blockquote><p></p>
[QUOTE="jmden, post: 462570, member: 1742"] My understanding of AI (Ackley Improved) is that it specifically designates a 40 degree shoulder. If I recall correctly, that was PO Ackley's 'trademark' shoulder angle. Many of the Lap Imps (and Imps in general today) are down around 35 degree shoulder angles. My 338 AX (Kirby Allens' Lap Imp) is doing 2980fps with 300 SMK over 102.0g Retumbo out of a 30" barrel, but I think I'm going to tone that down by at least .5 g here soon. [/QUOTE]
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338 Lapua mag improved or 338 Lapua mag AI?
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