I second Joe's recommendation. The RCBS 180 FN has been plenty accurate for me in several 30-30's and a few other bigger 30 cals. It usually casts around 195-200 for me depending upon the specific alloy. The only drawback I can see is that the base of the bullet is likely going to be well below the shoulder, if that bothers you. It has never been an issue for me in several cases from 22 cal to 35 cal.
NOE has a couple designs that may work better in a 308 case, but they are lighter weights, 165-175 grains.
