I never said anything about a cartridges "inherent accuracy." All I am saying is that a 30 degree shoulder requires less case trimming. We all know by now that accuracy comes from a quality barrel and a true chamber.
I consider trimming to be brass prep, or maybe worse than brass prep. Things like deburring flash holes, turning necks, fire forming, etc are all one time events. Having to trim a case after each firing is much more time consuming over the life of the barrel. I was just pointing out the trimming as another example of why I don't shoot 260, and the 6.5slr does away with the whole "not enough case capacity argument of the 6.5x47 vs. 260." Which as was discussed in another thread, I think the spped of the x47 vs. the 260 is a moot point.
By the way, I hate brass prep too. I don't do any of the above mentioned things when reloading. Another reason to use lapua brass when available!
I honestly think that if lapua would have come out with something like the 6.5slr from the beginning instead of the x47. The 260 would have gone back to a squandering chamber that nobody shoots very much.