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Rifles, Reloading, Optics, Equipment
Gunsmithing
AR ackley
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<blockquote data-quote="Kevin Thomas" data-source="post: 375277" data-attributes="member: 15748"><p>+1 with Southwind here. The AI family can make for some major increases in speeds, so long as we're talking about cases that have substantial taper to begin with; the 22-250 or 257 Roberts are excellent examples. Both show considerably higher velocities than the original parent cases, since their capacity is increased substantially. In those cases with relatively straight designs (minimal body taper) and fairly sharp shoulders, there's not much "improvement" to be had in the first place. The standard 223 Remington or 5.56x45mm falls squarely into the latter category. Aside from the potential feeding issues I addressed earlier, I just don't think you'll see enough difference here to warrant the extra headaches involved.</p><p> </p><p>Kevin Thomas</p><p>Lapua USA</p></blockquote><p></p>
[QUOTE="Kevin Thomas, post: 375277, member: 15748"] +1 with Southwind here. The AI family can make for some major increases in speeds, so long as we're talking about cases that have substantial taper to begin with; the 22-250 or 257 Roberts are excellent examples. Both show considerably higher velocities than the original parent cases, since their capacity is increased substantially. In those cases with relatively straight designs (minimal body taper) and fairly sharp shoulders, there's not much "improvement" to be had in the first place. The standard 223 Remington or 5.56x45mm falls squarely into the latter category. Aside from the potential feeding issues I addressed earlier, I just don't think you'll see enough difference here to warrant the extra headaches involved. Kevin Thomas Lapua USA [/QUOTE]
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