Trail Boss in a .357 Max rifle

[nitroproof]

I have Martini Cadet in .357 Max... Anyone tried Trail Boss in their Maxi?

[quilbilly]

I have been wondering about that myself but I have that T/C barrel away at the moment. My guess from experience with Trail Boss in other calibers is that the max velocity will be about 60% of the max with the same size J-bullet with any powder.