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To: Magnum44
2000 rounds is a lot for a long range rifle, but not very long in barrel life compared to what I would expect on other rifles. I wonder why the short life. When I compare reloading data, the max pressures for the Creedmoor are not that much more than max pressures for 308Win. Like 60,000 PSI vs 59,000 PSI. For the same weight bullet the muzzle velocities are also pretty comparable. I wonder what the life issue is?

It's not the pressure. It's the flame cutting by the high-temperature gases that result from the burning propellant. The reason the 6.5 Creedmoor performs like it does is due to heavy bullets and a lot of slow-burning powder to push them at those velocities and still stay under allowed pressure. Using stainless steel increases the barrel life somewhat, but they still burn the throats out pretty quick compared to other cartridges.

47 posted on 02/11/2019 7:11:38 PM PST by eastexsteve
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To: eastexsteve

Thanks, but it’s still not 100% clear to me. You can use many of the same powders to load 308 as the Creedmoor. But I am not discounting your warning about barrel life. I learn something new everyday and that’s the way I like it. :)


53 posted on 02/11/2019 7:30:00 PM PST by Magnum44 (My comprehensive terrorism plan: Hunt them down and kill them)
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