I am going to start reloading some light loads for my Trapdoors, H & R Buff Classic, and '74 Sharps. Some manuals recommend 2.095" trim-to length for the brass, some recommend 2.100", and one recommendation I read was to cast the chamber and trim the brass accordingly.
I have new Rem brass and most of the fifty rounds mic to 2.094"- 2.095. Will the brass grow to 2.100" or more even when using light loads?
I have some older brass that mics to about 2.092"-2.093". What is the drawback of using brass a thousandth or two under the recommended length?