Thread: Whats your fire forming process?

Originally Posted by Willus

Looking at fire forming some cases. What is your process and components (powder, filler etc) you use?

Don't listen to those other fellas Willus, listen to the Moa.

Head spacing is the concern when fire-forming. If there is no formed shoulder to support the case it will be driven forward and then on ignition the case head will stretch back until it hits the bolt and bugger the case by thinning the brass or even split the case and separate the head. Probably stuff you have already been reading about. The very best way around this is to set your neck size die so that it does NOT fully size the neck but leaves a donut ring at the neck / shoulder junction. Adjust the die so that a case can be chambered but is firm on the bolt. The case is head spacing and held tightly in place between the neck ring and the case head. Load a normal standard load and go hunting