A friend gave me a hundred of his .38 special loads to try out. On the sight-in, I got a 12 shot group measuring about 1 1/4" at 50 feet off sandbags. The load is 3.5 grs W 231 over a 148 gr lead wadcutter. I took the brass and
bullets he sold me and loaded them up. But the groups I got were much larger than with his reloads. Any ideas on where to start looking for variables? He said to crimp _very_ lightly, which I did. I did not ask what primers he was using; I used Winchester.
Any ideas would be appreciated.