09-15-2022, 03:37 PM
(09-15-2022, 12:00 PM)herman lesley Wrote: I necked down 6.5 grendel to 6mm arc. Will I need to fireform them before running a ladder test?
Depends on how precise you want to be. Firing them and then measuring the headspace would allow you on the resize step to bump back the should the minimum amount leading to better precision and longer lasting brass(IMHO).