Bullet seating depth's for rifle barrel node

[warbucks]

Ideally you need to load up several ‘batches’ of differing lengths and bench test each for grouping starting at the minimum COAL and move up in say 5thou increments or 10 thou and when you see a distinct group reduction at a point you can then fine tune the length again by group testing.
To improve concentricity (& therefore consistency) of the rounds when seating the bullet once rotate the cartridge 180 degrees and reseat .

Thanks very much for this, iv'e already loaded some up at 5 thou increments just need to test them now.

I hate and detest developing new loads, try to short cut it as much as possible, never seem's to work.

Dave (warbucks)