I haven’t checked runout. The issue I am having is obtaining consistent headspace. The Lee press is a Wobbly loose cheapie. The flex and wobble make it impossible to produce cartridges with the same headspace. They vary by a few thousandths.
I can’t turn lead into gold. A more solid press would produce more repeatable results.
Before you invest in a new press are you able to measure your headspace and the amt of bump you are sizing your brass
Do you have a headspace gauge to measure the amt of sizing. The gauge allows you to measure your headspace to give you an idea of how much you are bumping the shoulder.
-2ndly do you know if you are bumping your shoulder enough...here is (one) method to determine headspace
As for what the PROs use... subjective based on discipline
F class guys prefer Forester co-ax press. a large press with two rams and a floating die holder to give you better alignment and less run out. One of the largest selling feature is the quick change set up. The forester will allow you to go from a FL to neck to depriming die or using it as a priming station in short order.
- Top shooters are most likely using custom FL sizing dies to give better body tolerances. factory dies size to min spec which reduces the entire case (shoulder taper and base). with custom dies you can match your chamber size for more consistent ammo
- they don't use big presses for seating operations. More and more shooters are moving to arbour presses or smaller press like the RCBS partner press. The thinking is they can feel neck variations easier with the smaller press then with the big heavy leverage presses (rock chucker or co-ax).
If you are looking for the nth degree is seating consistency an arbour press with a measuring pad or the Hydro seating press can measure variations and help shrink group size.
Trevor