I seem to be having trouble with inconsistent seating pressure which is resulting in an ES of seating depth of 0.003 (avg. of 0.0015 variance in seating depth). I am using neck turned Lapua brass (variance of 0.0004 neck thickness) which is on its 9th firing. The brass is annealed after each firing w/ a Bench Source annealer. The brass is cleaned with stainless steel media and the mouths are chamfered. Note: I have the same issue if I leave the necks with carbon inside.
For some reason, I still am getting inconsistent seating effort seating SMKs into the brass. When I use brand new Lapua brass, the seating effort is spot on each time and my ES of seating depth is at most 0.0005.
What could be the cause? Is my annealing not effective? The variance in the neck thickness too much? My neck tension too much (0.0025)?
This issue is driving me crazy.
For some reason, I still am getting inconsistent seating effort seating SMKs into the brass. When I use brand new Lapua brass, the seating effort is spot on each time and my ES of seating depth is at most 0.0005.
What could be the cause? Is my annealing not effective? The variance in the neck thickness too much? My neck tension too much (0.0025)?
This issue is driving me crazy.