I produce ammo that is consistantly accurate using Redding sizing die and Hornady New Dimension seater. Checked concentricity of this ammo and it was always .003" TIR so I no longer check concentricity. this is plenty good enough for a hunting rifle and 3 shot groups are often tight cloverleafs. I do weigh every charge and trickle up to weight, I use SAMMI OAL and never have fooled with seating depth variation. Alway have been able to produce accurate loads using this method.
