Mine shot fine with 180 gr. XTP's over a compressed charge of H-110. In the Speer manual, you'll find then under .357 Magnum (Silhouette loads). I went to their max cgarge, no problem. The fun one so far was the 125 gr./Compressed H-110 load. About 2,000 fps at the muzzle! Can't wait to whop some 'yotes with it!