I've shot the 257Ackley for 30years now and have killed a ton of deer w/it. I have always used the 115gr BT and it's always got the job done. If I was forced to hunt elk w/it I would use the 120gr Partition. The sheer mass of an elk would be my guiding reason behind my choice. Even though my gun is a 25-06 practically speaking...the heavier, tougher bullet would still be my choice. A lot of difference between a 150lb deer and a 600lb elk. powdr
