I may be wrong, but I think 150grain of triple 7 is too much powder for that gun. Remeber, triple 7 burns 15 to 20% hotter than pyrodex. The 150 grain max load is for pyrodex and not for triple 7. I personally wouldn't go over about 120 grains of triple 7.

I shoot a .50 Knight Disc Extreme with 100 grains of triple 7 and have been playing with the power belts, Knight red hots, and dead centers.

cybersniper