I have T3 Lite .300 Win Mag and love it. I shot my friends T3X super light or however freakishly light they call it; 7mm and it was nice. It had just as smooth of an action as my T3 did. The rounds were not reloads and it seemed as though the barrel was heating up only after 4 shots...granted, most barrels are starting to get warm with 180-210 grains going out, but this seemed early.