Reply to thread

Message

<blockquote data-quote="Mikecr" data-source="post: 1068389" data-attributes="member: 1521">I haven&#039;t seen an actual pattern with ANY bullets.The only pattern I&#039;m aware of in seating is with tiny underbores(6PPC, 30br, etc) loaded to reach extreme&nbsp; pressure nodes. These will need bullets into the lands(ITL) regardless of type, to get high starting pressures.Anyway, because seating is the single biggest adjustment to results(way bigger than powder), I go ahead and run a full blown version of Berger&#039;s seating test right up front. This, during brass fireforming.With best seating determined(coarse), and all cases at stable capacity, I&#039;m ready for powder testing. With best seating AND best powder load, I tweak seating&nbsp; within a 10thou window of prior tested best, to shape grouping.Then I move into cold bore load development, but seating with that bullet/barrel will never need to be adjusted again.Change the bullet or chamber and it&#039;s start over for seating.</blockquote>

[QUOTE="Mikecr, post: 1068389, member: 1521"] I haven't seen an actual pattern with ANY bullets. The only pattern I'm aware of in seating is with tiny underbores(6PPC, 30br, etc) loaded to reach extreme pressure nodes. These will need bullets into the lands(ITL) regardless of type, to get high starting pressures. Anyway, because seating is the single biggest adjustment to results(way bigger than powder), I go ahead and run a full blown version of Berger's seating test right up front. This, during brass fireforming. With best seating determined(coarse), and all cases at stable capacity, I'm ready for powder testing. With best seating AND best powder load, I tweak seating within a 10thou window of prior tested best, to shape grouping. Then I move into cold bore load development, but seating with that bullet/barrel will never need to be adjusted again. Change the bullet or chamber and it's start over for seating. [/QUOTE]

Verification