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Hunting
Long Range Hunting & Shooting
300 Norma Improved. Load testing, info, and builds
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<blockquote data-quote="rpierce" data-source="post: 2235140" data-attributes="member: 20643"><p>Yes. Every single borden is dead straight, comes with a timed ignition from borden, and has an integral recoil lug. Not sure if the bigger threads is a big benefit but in theory it is. Itll help eliminate bolt click. However by the time Ive gotten bolt clicks on kelbly or bigger actions the case head has expanded. The bigger lugs on the borden should help with lug setback. I measured it on a Kelbly with 1500 rounds and it wasn't much. However I measured it on a different action with very small lugs and it had .0015 in 200 rounds. Now that was on a 33xc with warmer loads. However that amount in 200 rounds is excessive.</p></blockquote><p></p>
[QUOTE="rpierce, post: 2235140, member: 20643"] Yes. Every single borden is dead straight, comes with a timed ignition from borden, and has an integral recoil lug. Not sure if the bigger threads is a big benefit but in theory it is. Itll help eliminate bolt click. However by the time Ive gotten bolt clicks on kelbly or bigger actions the case head has expanded. The bigger lugs on the borden should help with lug setback. I measured it on a Kelbly with 1500 rounds and it wasn't much. However I measured it on a different action with very small lugs and it had .0015 in 200 rounds. Now that was on a 33xc with warmer loads. However that amount in 200 rounds is excessive. [/QUOTE]
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300 Norma Improved. Load testing, info, and builds
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