Originally Posted by barnesuser28
Another important "step" is to make sure you have consistant seating depths, within .001" from one round to another.
+1. Measure the snot out of everything. Consistency and uniformity are the goal. People have different methods and preferences, but measuring properly gives you the ability to change things and determine the effect on accuracy.
I think OAL is key, and I measure all of my reloads to the ogive with a bullet comparator. Then I use a competition seater to make them all exactly the same (seat slightly long, measure, re-seat exact). Understanding the distance of the bullet to the rifling is also critical, and hornady makes a pretty easy to use tool for this.
I am also pretty anal about headspace / shoulder bump consistency and I am a trickler - every shell has as an exact of a powder charge as I can measure.