Concerning Trail Boss - merely google this powder and get the data right off IMR's (Hodgdon) site.

In my .45/60 chambered Sharps, 15 grs.Trail Boss fills the case to the base of a .45 cal. bullet (same overall length as a Marlin .45/70) and develops 1,100fps - yet the pressures are about 4,000PSI higher than a 1,650fps load with a 45.0gr. charge 400gr. Jacketed bullet using Bench Mark (35" barrel).