RE: rate of twist in 25-06
Varmints + Deer = 25-06 Good ballistics, light recoil, and a wide variety of bullet selections make it very versatile.
87 gr. spire points are good at the range and on critters. I have loaded some 75 gr. V-Max, but haven't had a chance to shoot them yet.
For deer, there are several bullets in the 110-120 range worth a try. I am currently using Accubonds, as the Barnes Triple Shock loads are still in the developmental stage.