WOW i recently discovered the Knight Ultimate slam series PBT and oh man do they shoot. Three shots into a 1/2" at 100 with a volumetric 100gr charge of T7 FFg and a T7 primer. I also floated my omega TH and this was its maiden voyage since. I will definetly say that floating my omega was a definate plus. It made a difference in my overall group size but most of all it eliminated my fliers i was getting with pet load. I ran about 30 rounds thru it of various bullets 300 SW(my favorite load) 250 SW, 250 Knight PBT and the obvious winner was the Knight. Am I correct in that the Knight PBT and the Barnes spitfire TMZ is the same? Any good prices on these? Most i have found have been about 1$ a shot.