I like the 110 grain .257" and 130 grain .264" ABs. The heaviest whitetail that I've ever shot fell over dead in its tracks after being hit with a 110 grain AB from a 25 WSSM, so I might be a little biased.
I'm planning to shoot my 6.5 Creedmoor deer with the 100 grain Partition, 123 grain AMax, and/or 129 grain SST.
