The SD of the 130 grain bullet is more than enough for deer and even suitabe for bigger game. The SD (sectional Density) of the 130 grain 270 bulley is about the same as the 165 grain for the 30 caliber. The 270 would perform well on deer with a 120 grain bullet as does the 7mm-08 and 6.5x55. I Like a bullet with an SD of 210-250 for deer. I seem to get the most Bang Flop kills with those bullets in all calibers.