I'll list a couple bullets that I would use for deer. Noslers 130, 140, 150 btips, 140g AB, 130-150g sst. Those are all plastic tip with higher BC's then there counterparts. The 140-150 sierra gameking is also working for me out to 800 yards. I just worked up a load with the 150g sst with h4831sc and its going 2850fps and .6 moa. The BC is around .525, highest BC hunting bullet available for .277. I would go with a 140 or 150 myself. Powders that are working well for me is h4831sc and RL-22.