I don't see how sectional density and ballistic coefficient are going to affect felt recoil. Idahoguy101 asked about recoil.
When you are measuring effectiveness on game comparing SD's is far more accurate than bullet weight. Comparing effectiveness of a 270/150 to a 30-06/150 on game isn't a fair comparison, the 270/150 is a much better choice with similar recoil. Comparing the 270/150 to a 30-06/180 will result in similar results on game, but with slightly more recoil for the 30-06/180.
