Shot the test loads I worked up for .38sp 158gr LSWC, yesterday. At 20 yds, 4.0 gr of Unique and 3.3 gr of HP-38 were the winners. They both grouped about 1.75 inches for 6 shots, from a rest, single action in my GP100 with 4" barrel. Very pleased with both, but the nod goes to Unique. Less recoil and less smoke. Neither load seem to leave any lead in barrel. So I loaded up 300 rounds today, and will try them in our next Dirty Harry practice on the 12th.....