Many moons ago the big city police range sold us 50 .38 special 148 grain wadcutter reloads in a brown paper lunch bag for $3 on the condition that we returned the empties. They used electric loading presses that allowed the operator to put his feet up and watch a ball game while they cranked out reloads. Initially I did not shoot the ones that had longitudinal case splits. They swapped them for good looking cartridges. After a while for my $3 they handed me a bag containing 50 cartridges with split cases and told me if I came back claiming they did not shoot as well they would give another bag of good ones for free. They shot just fine. Accuracy was not affected. Most or all of us who reload have discarded cases that split during the final time we used them. I'm not buying the theory that a split case was responsible for what ever happened.