RE: 243 on elk
RH. You bet. There is a good reason that the old swede will shoot through most any critter in NA with room to spare. Even the 129 Hornady has an SD of 263. A friend of mine shot a nice elk with the 260 and the 140 X bullet. It went through both front shoulders and beyond. This at 300 yards. Never sell the 264 bullets short.