Dogshooter,
That's the dirty little secret of the 6.5 Creedmoor: The longest high-BC bullets can't be seated to the lands in some factory rifles, and still have the rounds fit in the magazine.
However, high-BC bullets just a little shorter will almost always work, such as the 139 Lapua Scenar. which is probably part of the reason that companies like Berger are making some slightly shorter-ogived bullets with BC's just about as high as the longer ones.
My present .260 (a Tikka T3) wouldn't even allow either 130 or 140 AccuBonds (the standard models, not the 129 or 142 LRAB) out to the lands.
