I also posted this in the whitetail forum. I have a 243 Win that I developed loads with both 100 gr Sierra Pro Hunters and 100 gr Speer Grand Slams. Both loads are near max, both shoot 1 MOA, both shoot to the same point of impact. I have used Pro Hunters in a 270 with good results on whitetails. No on game experience with the Grand Slams. 1) Any real world game experience with Grand Slams out there? 2) Which bullet would you use?