I have both and both reliably kill whitetails. If you want flat in the ,260, run 100 gr TTSX's over 42-43 grains of 4064 or 4166. I'm mid 3,100's and accuracy for 3-shots is around 1/2". I've also ran the 120 TTSX's and using N204 get right at 2,900 fps, but I think the 100's kill just as well. I've since moved on to Partitions in both rifles and from the small number of deer I've shot, I think they kill better if there is such a thing.
