Now I will give you the county boy max load data I got many years ago. Go out and fire the gun over snow and when you see unburned grains of powder on the snow THAT is all the powder you can burn. The T/C has a retavily short barrel by M/L standards and IIRR the most powder I could really burn without pushing some out the barrel was about 90 grians of FFG. In actual practice a load of just 70 grains of FFG will push a round ball through both sides of a buffalo and kill him dead. Worry about accuracy and forget about maximum velocity. Long ago I got over the idea that I needed a lot of powder to kill something my hunting load for my rifle is just 85 grains of FFG.