38 special brass is notorious for splitting. You get 1-4 loadings generally depending on various factors (brass manufacturer, how hot you load). I've read that .357 mag brass is made a bit thicker. Is this true? Would it be possible to trim the .357 mag bras down to 38 sp length? The only problem I could see with this is thicker brass leads to less volume in the cartage which could lead to higher pressure. Has anybody here done this? Does it increase case life?