in the process of procuring a 7mm rem mag, and need a little help with bullet and powder selection. I've had pretty decent luck gettig Sierra Match Kings to shoot pretty accurately in my other rifles, and will probably start with that brand. Intended targets are Whitetail Deer, and paper at various ranges. The rifle is a 9-1/2 twist Savage, w/25" barrel. What weight of bullet is ideal for the 9-1/2 twist @ 7mm Rem Mag velocities? Whats a good powder to safely reach those velocities with consistancy? Thanks!