Much as been said about fireforming brass before neck sizing and really fine tuning loads. However, since my Forster FL die sets my 260 neck tension at .005+, what is the harm of going ahead and FL sizing the new lapua brass, then running it through my Lee Collet die with .002 tension? I checked and shoulders aren't buckling or anything, but it just seems to me that too tight neck tension is an unnecessary part of fireforming/initial load development.
I have my charge down to a .3-.4 grain window that I will tune after first firing, but I was thinking of going ahead and dispensing with neck tension issue as well as determining optimal seating depth on the brass's first firing. Any problems with this?
I have my charge down to a .3-.4 grain window that I will tune after first firing, but I was thinking of going ahead and dispensing with neck tension issue as well as determining optimal seating depth on the brass's first firing. Any problems with this?