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Long Range Hunting & Shooting
Improving the 308 Win performance
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<blockquote data-quote="nralifer" data-source="post: 2830454" data-attributes="member: 94556"><p>You need to account for the characteristics of not only the SRP brass and the high energy of LVR powder but also the high bc of the Badlands bullets. See the JBM trajectory calculation for the 150 and 175g 308 BD2 bullets. The MVs I quoted in those trajectory calculations are from loads I have used many times safely with no pressure signs. The high speed that LVR is able to impart to these high BC bullets combine to significantly outperform conventional copper and lead core bullets. Note these are calculations made at standard sea level conditions. You can recalculate the trajectory calculations at 4500 ft elevation which is even more favorable and more realistic elevation at which Elk are taken. These MVs are achieved from 24" Bartlein 1:9 twist barrel and measured using a Lab Radar. Brass used was Lapua Palma and primer was the CCI450 primer at a COAL of 2.950". Action was a Savage short action. Powder was Leverevolution starting at 45 gr and increasing the charge by 1 gr until some primer flattening is seen.</p></blockquote><p></p>
[QUOTE="nralifer, post: 2830454, member: 94556"] You need to account for the characteristics of not only the SRP brass and the high energy of LVR powder but also the high bc of the Badlands bullets. See the JBM trajectory calculation for the 150 and 175g 308 BD2 bullets. The MVs I quoted in those trajectory calculations are from loads I have used many times safely with no pressure signs. The high speed that LVR is able to impart to these high BC bullets combine to significantly outperform conventional copper and lead core bullets. Note these are calculations made at standard sea level conditions. You can recalculate the trajectory calculations at 4500 ft elevation which is even more favorable and more realistic elevation at which Elk are taken. These MVs are achieved from 24” Bartlein 1:9 twist barrel and measured using a Lab Radar. Brass used was Lapua Palma and primer was the CCI450 primer at a COAL of 2.950”. Action was a Savage short action. Powder was Leverevolution starting at 45 gr and increasing the charge by 1 gr until some primer flattening is seen. [/QUOTE]
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Improving the 308 Win performance
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