Chap,
if I can get good accuracy out of the Barnes TSX that would be my first choice as I think the terminal performance would be the best out of the four I had listed. Although Sabotloader's info on the Nosler is very impressive as well. I'm switching powder this year, going from AA5744 to IMR-SR-4759. Have you had any problems with hang fire or mis-fire with the 4198? . I am thinking 43 grains of the 4759 should get me near 2200 feet per second.