That depends on the turret press. I load 6mm PPC’s on my Redding T7 using Redding Competition dies, and without any tricks like turning the case 180 degrees during seating, the rounds come out averaging around .0005” runout with 65-grain Bergers.
I also must comment that I’ve tested turning the case after seating the bullet halfway many times, using conventional seating dies in many cartridges, and have yet to find it makes any significant difference in consistently seating bullets straighter. Evidently it makes a difference with some dies, in some instances, but I have never seen it.
