I'm doing a large batch of .223 and I decided to check concentricity and found the runout to be .008-.010". If I roll the loaded round on a pane of glass, the bullet wobbles and it is clear that the neck is out of line. Some of them even appear to be off at the shoulder.
Brass is once fired military and I resized with a Redding standard FL die on a LNL AP to fit minimum on a case gauge. Sizing was done as a separate operation. I have set up the same sizer die in my Forster Co-ax press and set the die to size the same; to the gauge. After resizing the brass again, it still has this runout! Loaded ammo slips into the gauge no problem and chambers in a rifle as well.
This is the first time this die has been used. I loaned my RCBS AR series die that I typically use for FL sizng .223. Is it possible the Redding die is machined improperly? I don't have another .223 die to try currently.
Could it be tolerances in the progressive torquing the case in a certain direction as it is forced into the die? The cases (esp. 223) on my LNL AP like to tilt inwards when between stations.
Any help is appreciated.
Brass is once fired military and I resized with a Redding standard FL die on a LNL AP to fit minimum on a case gauge. Sizing was done as a separate operation. I have set up the same sizer die in my Forster Co-ax press and set the die to size the same; to the gauge. After resizing the brass again, it still has this runout! Loaded ammo slips into the gauge no problem and chambers in a rifle as well.
This is the first time this die has been used. I loaned my RCBS AR series die that I typically use for FL sizng .223. Is it possible the Redding die is machined improperly? I don't have another .223 die to try currently.
Could it be tolerances in the progressive torquing the case in a certain direction as it is forced into the die? The cases (esp. 223) on my LNL AP like to tilt inwards when between stations.
Any help is appreciated.