I'm planning for a semi-custom rifle build that likely will be either a 6.5 Creedmoor or a 260 Remington. When I look at load data from different sources I find the velocities given seem to be an expectedly broad range for each cartridge. If someone with actual experience can help me out here's my question. With either cartridge, what sort of velocities is it safe to assume I would be able to reach with 130 grain and 140 grain bullets and a 26" barrel?
