Originally Posted by robocop10mm
The difference between max length and trim length is .010". I trim everything to trim length. COAL has little to do with case length. Bullet profile will cause soem variance. Not every bullet is EXACTLY the same. Slight variantions in ogive will cause slight COAL variations.
Absolutely. And that is why I always set my seating stem by measurements with a bullet comparator. (I use Sinclair's comparator)
Keep good records, and make dummy cartridges for different bullets and precise adjustment
of your seating die is a 30-45 second operation.