Was wondering if someone can help explain pressures in rifle cartridge reloading. I have been comparing two similar rifle cartridges - 260 Remington and the trusty old 6.5x55. The load data I've seen comparing the same components in these produce near equal velocities with the small edge going to the 260. But the pressures between the two loads seem great - I think. Roughly 57K for the 260 Rem and 45K for the Swede according to the Hodgon data. Is this a substantial amount? Does it significantly put more stress on rifle (barrel erosion) and brass? Does it really matter? I would prefer sticking with the Swede but something new and different makes the 260 intriguing. Thanks in Advance.