Comments on Trail Boss & Unique 357

I am new to reloading. In 357, I have loaded 5.5 gr of unique with a 125gr flat point x-treme copper plated bullet as my first load. I then bought some 158 gr lasercast lead round flat point bullets and charged them with 3.5gr of Trail Boss. It (Trail Boss) was fairly accurate (1.5" @10 yards) and very clean on my stainless gp-100. The unique was a lot dirtier. I also noticed some unburnt powder residue with the unique. I need to try some different charges with the Unique as 3.2gr was the starting load. The Trail Boss seems like it will be a good plinking and target load, but I have much to learn. I also would like to try some 125 gr jhp and load some true magnum loads.