Re: Fire Forming with Factory Ammo
I would say depends if you have a tight neck Chamber. I have one Ackley that is and 2 that are not.
The tight neck is a 6.5-06 Ackley Improved, I have to neck down or neck up depending on which case. If I neck up .25-06 Rem I stop right there,(besides full case prepping) load and fire form. However I prefer to neck down .270 Win brass trim to length, turn necks, all other prep work, load and fireform. These cases are perfect.
The .30-06 is lload & shoot as is the .243. I have made brass for the .243 AI out of .308 Lake City Math Brass and I have to do the same steps as for the 6.5-06 AI.
Turning the necks may be necessary, I don't mind as they seem to shoot better when I do.