Here's one for the collective. A tale of two pistols. My current method for loading .357's is to cast a Lee 140 gr pb, powder coat it and run it through my Lee sizer. They come out at .3595. Then load I them up into full length resized cases with a mild roll crimp into the first groove. This gives me a COL of =.1.559" This ammo chambers and shoots well in my S&W mod19, but is too tight to chamber in my Ruger Speed Six. So, I've been re-sizing them for the Ruger. After I size them, they mic at .375 at the neck. As a reference, I mic'ed a factory Win and it was exactly the same at .375.
You folks ever size loaded ammoe? Is it safe? I suspect the Ruger has tight chambers and a call to Doug may be in order.