Originally Posted by cayugad

120 grains of 2f is what Thompson Center claims is the max load. They recommend 90 grains for best accuracy. This is out of there old manual that I have. It also gives fps and energy on ball and maxiball if you ever need to know.

90 grains - roundball fps 1373 energy 1168
90 grains - maxiball fps 1149 energy 1642