Fireforming/neck turning

[agr516]

When using the COW to fireform for a tight neck ackley chamber, is it best to neck turn before or after fireforming?

 

[agr516]

I meant to say COW method of fireforming.

 

[alf]

I prefer to blow them out straight first, then turn.

 

[boltfluter]

If you use a good expanding mandrel that matches your turning mandrel then it will work fine. I use both methods on my benchrest rifle and can tell no difference in accuracy. 6PPC. Hope this helps. Paul. 8)