The same COAL restrictions apply, but the different shoulder angle of the Creedmoor make it easier to reach the lands at mag length. If both the Creedmoor and 260 are setup using the same bullet at a COAL of 2.8" the 6.5 Creedmoor will not be seated as deep as the 260. Most guys that run long heavy bullets in the 260 run it as a single shot platform. Otherwise you are not making efficient use of the offered case capacity.