I don't think there is any published data for this bullet. If you called Sierra, they could probably tell you something. I recently worked up a load for it, 26.0 grains of Varget under the 65 Gameking. At 100 yards it shoots great out of my Savage 12 BVSS (about 3/4" ave) and shoots just less than an inch average out of my Remington 700 ADL despite its 1-12" twist barrel. The weather has not been conducive to chronographing lately so I don't know how fast its going.