I put Wolff springs, 2lbs lighter than stock, in both the SP 101 .357 Magnum and The SP 101 .22 I owned. Also polished the sides of several parts to remove roughness. After lightly applying synthetic oil to the action, I dry fired both guns, a lot, with snap caps. The .357 ended up with a pretty good D/A trigger, the .22 was better than stock, but not that great. It's an easy job and doesn't cost much, so why not try?
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