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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="Long Time Long Ranger" data-source="post: 462532" data-attributes="member: 505"><p>Many variations of the imp lapua. Some push the shoulder forward and many different shoulder angles and body taper. The AI is one of many versions and they are not interchangeable. Back when the Lapua case came out I was in contact with smiths all over the country as we tried different versions to find the best one. It seems like in the 90's every shop had there own proprietary version. Not a lot of difference performance wise with any of them with most getting 2900-3000 fps with a 300 smk out of a 30" barrel. The one I settled on had the shoulder pushed forward a few thousanths with minimum body taper and shot the 300 smk 2950-3000 fps out of a 28" barrel. </p><p> </p><p>The Excalibur is about the largest case out there over the counter with more capacity than the 338-416 Rigby case that was popular for years. It is the top performer with several grains more capacity than the 338-378 wby.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 462532, member: 505"] Many variations of the imp lapua. Some push the shoulder forward and many different shoulder angles and body taper. The AI is one of many versions and they are not interchangeable. Back when the Lapua case came out I was in contact with smiths all over the country as we tried different versions to find the best one. It seems like in the 90's every shop had there own proprietary version. Not a lot of difference performance wise with any of them with most getting 2900-3000 fps with a 300 smk out of a 30" barrel. The one I settled on had the shoulder pushed forward a few thousanths with minimum body taper and shot the 300 smk 2950-3000 fps out of a 28" barrel. The Excalibur is about the largest case out there over the counter with more capacity than the 338-416 Rigby case that was popular for years. It is the top performer with several grains more capacity than the 338-378 wby. [/QUOTE]
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338 Lapua mag improved or 338 Lapua mag AI?
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