I am working up a load for my 6.5 creedmoor with the new A5 McMillan stock. The rifle has a Mauser action and the cheek piece was not designed for it. I would not recommend anyone use a Mauser action with any McMillan stock. That said, I came across a hot load from Berger in their ammunition: Berger Match Grade Ammunition 6.5 Creedmoor 130 Grain Hybrid OTM Tactical with listed muzzle velocity of 2921fps. I don't think this can't accurately be achieved with Varget or H4350. What powder do you use to achieve high muzzle velocity for 130grain OTM Berger?