I currently have a semi auto 308 and I want to have a bolt action built to both hunt (to 300 yards) and shoot steel out to 800 yards that is flatter shooting and has more energy than the 308. I was thinking maybe a 6.5x284 or 7mm stw and was curious if any one out there owned either and what your thoughts were on these two choices or should I look at a different caliber? Thanks for any input or comment.