All I'm saying is Trail Boss is a one trick pony. Not intended for more than cowboy shooting. One of the problems you run into in with cowboy shooting is lack of case expansion and seal. When firing lever rifles with the bolt exposed at the rear the gases travel back through the machined groves in the receiver and into your eyes as you fire, safety glasses needed, so the pressure spike would help to expand the brass and better the seal. Becomes more of a problem as the cases work harden after many reloadings and don't expand quite so easily under low pressures. Not that I have had any experience with that or anything. If I weren't shooting cowboy I'd just not buy the stuff.