Re: 30-06 bullet opinions and advice?
Loading for distance can cause some confusion.
While lighter bullets should start out faster, and heavier bullets should arrive with more velocity; neither factor, by itself, is the complete answer.
Drop and drift are largely a product of flight duration, or Time Of Flight (TOF). IMHO the bullet which arrives in the least amount of time should have the better drop and drift characteristics.
Applying an accurate muzzle velocity and BC to a trusted Ballistic Calc should derive a reasonably accurate TOF.
I have also found some significant deviations in real performance vs calculated performance, notably when shooting lighter bullets through fast twists over trajectories that generate a lot of arc. They perform as if they are encountering excessive yaw, increasing actual vs calculated drag and thereby increasing observed drop.
Bullet impacts indicate a nose high attitude as opposed to a nose on attitude, but they all seem to impact nose upward, and dispersion is not indicative of a random yaw orientation. If I had to pin it down, I'd say they were failing to orient their nose to accomodate the arc of trajectory and responding as if they are pitching up relative to the trajectory curve.
These observations were the result of firing about 100 shots at 1000yd with a .260 Rem chambered 28" 1:8" barrel using Nosler 120gr Ballistic Tips. the only comment Nosler would suggest was that they don't recommend using those bullets at such longer diatances. While I accept their advice, I find it somewhat lacking in terms of a logical explanation.
Perhaps someone more adept at this stuff will chime in here.
I believe the performance discrepancy points out the different effects of static stability (the gyroscopic stability of a spinning top), and dynamic stability (the aerodynamic stability of an arrow).
IMHO this favors a bullet with a more forward center of mass, which should allow it to respond more effectively to dynamic stability effects; looking maybe like something which is constructed more like a copper solid in its rear half (or maybe something even lighter, like an aluminum rear half core), and a jacketed lead bullet in its forward half. This is untutored speculation and may ignore some gyroscopic or supersonic drag factors I'm missing somewhere along the way
In response to the original question, I don't really think (on the theoretical basis) that the '06 suffers so much from employing adequate (but toward the lighter end of the weight spectrum) bullets, like a decent 165-175gr VLD. I would suggest keeping the twist slow enough, like a 1:12" twist rate. It is also my observation that once the bullet weights get bigger than this, the recoil of the '06 becomes sufficiently significant to impair effective practice due to added fatigue.
Greg