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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet choice and twist rate for 30-06 LR build
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<blockquote data-quote="Capt RB" data-source="post: 1051585" data-attributes="member: 85987"><p>Optimum barrel length for a 30cal is 27.125" for vibrational tuning in military testing.(I assume it was a M24-M40 contor) Meaning that length had a larger sweet spot for shooting long range 30 caliber bullets in various cartridges. </p><p> Lapua brass will squeeze that last bit of performance out of your build. Also consider Danzac, HBN, or moly coating your bullets. THe advantages may be small but they are advantages. I use Moly and the 2 things I see are higher velocities or less pressure at a velocity that I want to shoot at. In the 270I can see 3200fps with 130's and 300fps with 150's without being anywhere near max. In my 243's and now a 243 ai Shooting 70 blitzkings at 3450 the rifle barely moves. The 87Vmax load at 3320 in the straight 243 is again very pleasant to shoot.</p><p> If you search for montana marines testing of the 190accubond lr in the 06 you can see the benefit of coating bullets</p><p> Good luck and post up your results</p></blockquote><p></p>
[QUOTE="Capt RB, post: 1051585, member: 85987"] Optimum barrel length for a 30cal is 27.125" for vibrational tuning in military testing.(I assume it was a M24-M40 contor) Meaning that length had a larger sweet spot for shooting long range 30 caliber bullets in various cartridges. Lapua brass will squeeze that last bit of performance out of your build. Also consider Danzac, HBN, or moly coating your bullets. THe advantages may be small but they are advantages. I use Moly and the 2 things I see are higher velocities or less pressure at a velocity that I want to shoot at. In the 270I can see 3200fps with 130's and 300fps with 150's without being anywhere near max. In my 243's and now a 243 ai Shooting 70 blitzkings at 3450 the rifle barely moves. The 87Vmax load at 3320 in the straight 243 is again very pleasant to shoot. If you search for montana marines testing of the 190accubond lr in the 06 you can see the benefit of coating bullets Good luck and post up your results [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet choice and twist rate for 30-06 LR build
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