Im seriously contemplating having my remmy 700 .308 in to a custom target rig. I would like to shoot F-class or similar style competition some day but i need practice and experience first. This rifle wont be used for hunting except for an ocasional yote. Now i like the .308 but for long range accuracy im learning that it is not ideal. I am having trouble deciding if 260 remington is a good choice for such an application. I cant really seem to find much load data or ballistic table info to support its claim to superiority over the .308 for this cartridge, but everything i read says its better faster flatter. One article i read claimed that the 260 could be loaded to beat the 300wm in drop in wind drift out to 100 yards. Is this round really that much better than the .308win ? I really like the fact that this round can easily be used in .308 actions, and the barrell life seems to be somewhat decent compared to other long range target rounds in 6.5mm. would you stay with 308 for this build, go for the .260 or should i look to another cartridge?