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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Next Sin Cartridge?
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<blockquote data-quote="Oliveralan" data-source="post: 526754" data-attributes="member: 20245"><p>What kind of powder capacity behind the 6.5 are you thinking? There is a long thread on here about my 6.5mm Voodoo, a 6.5-300 win mag. A very simple, extreme performance wildcat, uses all factory dies. I would strongly advise against going even larger in case capacity. There is almost nothing to be gained before bullets start coming apart.</p><p>My new load runs 3389fps with 72.5gr of Retumbo behind a 140gr Berger hunting VLD through a 1-9tw 28" mcgowen barrel. I didn't hit any pressure signs, but velocity almost stopped increasing. From 71.5 to 73gr Retumbo, the total ES was less than 25fps. It is a very stable load.</p><p>At least in my opinion, with my own personal experience i feel this is the upper limit of useful 6.5mm case capacity, i doubt barrel life will be more than 600-750 rounds depending on usage with this wildcat... </p><p>In hindsight i should have gone with a 7mm, i believe that is a much better match of powder to bore ratio. The ballistics don't lie, while 17 3/4moa to 1000yards from a 100yard zero is cool, in the end it's wind drift that is the determining factor in true long range hunting/shooting, assuming accurate ranging of the target...</p></blockquote><p></p>
[QUOTE="Oliveralan, post: 526754, member: 20245"] What kind of powder capacity behind the 6.5 are you thinking? There is a long thread on here about my 6.5mm Voodoo, a 6.5-300 win mag. A very simple, extreme performance wildcat, uses all factory dies. I would strongly advise against going even larger in case capacity. There is almost nothing to be gained before bullets start coming apart. My new load runs 3389fps with 72.5gr of Retumbo behind a 140gr Berger hunting VLD through a 1-9tw 28" mcgowen barrel. I didn't hit any pressure signs, but velocity almost stopped increasing. From 71.5 to 73gr Retumbo, the total ES was less than 25fps. It is a very stable load. At least in my opinion, with my own personal experience i feel this is the upper limit of useful 6.5mm case capacity, i doubt barrel life will be more than 600-750 rounds depending on usage with this wildcat... In hindsight i should have gone with a 7mm, i believe that is a much better match of powder to bore ratio. The ballistics don't lie, while 17 3/4moa to 1000yards from a 100yard zero is cool, in the end it's wind drift that is the determining factor in true long range hunting/shooting, assuming accurate ranging of the target... [/QUOTE]
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