I used 54gr IMR 4350/Sierra & Speer 200gr for years. I never got to kill anything with them nor check their speed. I later ( in 2006 I bought a Mod 700 CDL to celebrate the old Warhorse) in that rifle I used R22 and the Nosler 200PT. I have loaned that rifle/load to a friend who shot a humongous hog with it. Like the proverbial hot knife through butter it was! I have also used R15 behind the Woodleigh 240gr. That's also a thumper. I have seen more 168 TSX and TTSX kill more game out of the '06 and it is wicked too. I think sometimes we miss a lot of what a rifle will do when we do not use the heavy for calibers bullets. That's just me though. I like to "thump them".