The BT's larger than 30 caliber do have thicker jackets for use on larger big game animals like elk and moose. However, I would definetly choose the 225 grain accubond for the .338. A whitetail will not pose any problem for any of the .338 bullets but a big elk or moose might. With the accubond you get the ballistic benefits of the BT and the hold together ability of the partition. A much better choice IMO.