I have no professional association with Traditions but I won't shoot anything else. I shoot a Vortek and a Canyon. When I bought the Canyon I asked Traditions what load and bullet they recommended and the tech guy said 100 grains of powder or pellets and a 250 grain saboted bullet.

As far as I know all the ML makers say their guns will handle 150 grains but that is the MAXIMUM. 100 grains of powder is more than enough for anything but the biggest bears. My Vortek will put 2 in the same hole at 100 yards and the Canyon will shoot 1" groups, both with 2 White Hots pellets (100 grains).

Lastly, while I am a Traditions guy, I've only heard good things about the Impact from other hunters. Hope this helps.