Thread: Using comparator tool when seating projectiles.

Neck tension will give you variances in your seating depth as well. Also how much pressure you put on your press handle at the bottom. I just kiss the bottom of the stroke but if I give a bit of pressure and lean on it a bit, it can change by a couple thou.
Pretty amazing the difference sometimes just by moving a projectile 3-5 thou, can quite often shrink from acceptable to tack driver.