What you said on your first post is correct about the 06 being faster and flatter in trajectory. They are both 30 cal. and shoot the same bullets. The only difference is basically speed, as is comparison of the 06 to the 300 Win. Mag., or the 300 Win. Mag to the 300 Ultra Mag. etc. With the added speed you will get some added recoil, but the difference between the 06 and 308 is very little. Both are excellent deer / Black bear,( and other big game)calibers IMO.