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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
barrel life/ caliber questions to help with next build
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<blockquote data-quote="TMR" data-source="post: 287961" data-attributes="member: 5819"><p>We have done the same thing as you are looking at. I built 6.5x47 Lapua exactly like our 338 Edge's. We compete with our 6.5's throughout the year and they feel exactly like our Edge's coming hunting season.</p><p> </p><p>I know guys that have 2000+ rounds of hot loads 6.5's and they still shoot well under MOA, most under 1/2 moa. I have both a 6x47 and a 6.5x47. My 6.5 gets the nod most of the time. Something to be said about a 130gr .620BC bullet at 3000+ fps. I would go with the 6.5x47 and not look back. Although the 6mm version is faster and uses less elevation, the windage is basically the same or less with the 6.5 as the range increases.</p><p> </p><p>Another thing to consider, is to run a ballistics chart for your RUM and compare it to the 6x47 and the 6.5x47 to see which one closely match's. This way, when you practice, you will almost be in "time" with the RUM. Here are the velocities that my personal rifles run and most of my customers have run:</p><p> </p><p>6x47 Lapua, 105 Berger: 3150-3250fps </p><p>6.5x47 Lapua, 130 Berger or 130 JLK: 2975-3050fps</p><p> </p><p>6mm 105 Berger BC: .556</p><p>6.5mm 130 Berger BC: .565</p><p>6.5mm 130 JLK BC: .620</p><p> </p><p>The above BC's are what we have found to be correct our to 1500 yds with the 6.5's and 1250 with the 6mm. We have shot these from sea level to 8500' elevation. Oh, the above velocities are with 26" barrels. </p><p> </p><p>Travis</p></blockquote><p></p>
[QUOTE="TMR, post: 287961, member: 5819"] We have done the same thing as you are looking at. I built 6.5x47 Lapua exactly like our 338 Edge's. We compete with our 6.5's throughout the year and they feel exactly like our Edge's coming hunting season. I know guys that have 2000+ rounds of hot loads 6.5's and they still shoot well under MOA, most under 1/2 moa. I have both a 6x47 and a 6.5x47. My 6.5 gets the nod most of the time. Something to be said about a 130gr .620BC bullet at 3000+ fps. I would go with the 6.5x47 and not look back. Although the 6mm version is faster and uses less elevation, the windage is basically the same or less with the 6.5 as the range increases. Another thing to consider, is to run a ballistics chart for your RUM and compare it to the 6x47 and the 6.5x47 to see which one closely match's. This way, when you practice, you will almost be in "time" with the RUM. Here are the velocities that my personal rifles run and most of my customers have run: 6x47 Lapua, 105 Berger: 3150-3250fps 6.5x47 Lapua, 130 Berger or 130 JLK: 2975-3050fps 6mm 105 Berger BC: .556 6.5mm 130 Berger BC: .565 6.5mm 130 JLK BC: .620 The above BC's are what we have found to be correct our to 1500 yds with the 6.5's and 1250 with the 6mm. We have shot these from sea level to 8500' elevation. Oh, the above velocities are with 26" barrels. Travis [/QUOTE]
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barrel life/ caliber questions to help with next build
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