As I recall from chronograph testing TrailBoss, along with 5744, Unique and 2400, T.B. had the least consistent velocities. Didn't seem to male a huge difference in accuracy.(at 50 yards) TrailBoss does have the advantage that it would be virtually impossible to double charge a case. There is a highlighted thread from Colonel Drydock on the subject that has 29,000+views, lots of good information!